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Tuesday, January 15, 2019

Subsidy

From Wikipedia, the free encyclopedia

A subsidy or government incentive is a form of financial aid or support extended to an economic sector (or institution, business, or individual) generally with the aim of promoting economic and social policy. Although commonly extended from government, the term subsidy can relate to any type of support – for example from NGOs or as implicit subsidies. Subsidies come in various forms including: direct (cash grants, interest-free loans) and indirect (tax breaks, insurance, low-interest loans, accelerated depreciation, rent rebates).
 
Furthermore, they can be broad or narrow, legal or illegal, ethical or unethical. The most common forms of subsidies are those to the producer or the consumer. Producer/production subsidies ensure producers are better off by either supplying market price support, direct support, or payments to factors of production. Consumer/consumption subsidies commonly reduce the price of goods and services to the consumer. For example, in the US at one time it was cheaper to buy gasoline than bottled water.

Whether subsidies are positive or negative is typically a normative judgment. As a form of economic intervention, subsidies are inherently contrary to the market's demands. However, they can also be used as tools of political and corporate cronyism.

Types

Production subsidy

A production subsidy encourages suppliers to increase the output of a particular product by partially offsetting the production costs or losses. The objective of production subsidies is to expand production of a particular product more so that the market would promote but without raising the final price to consumers. This type of subsidy is predominantly found in developed markets. Other examples of production subsidies include the assistance in the creation of a new firm (Enterprise Investment Scheme), industry (industrial policy) and even the development of certain areas (regional policy). Production subsidies are critically discussed in the literature as they can cause many problems including the additional cost of storing the extra produced products, depressing world market prices, and incentivizing producers to over-produce, for example, a farmer overproducing in terms of his land's carrying capacity.

Consumer/consumption subsidy

A consumption subsidy is one that subsidises the behavior of consumers. This type of subsidies are most common in developing countries where governments subsidise such things as food, water, electricity and education on the basis that no matter how impoverished, all should be allowed those most basic requirements. For example, some governments offer 'lifeline' rates for electricity, that is, the first increment of electricity each month is subsidized. This paper addresses the problems of defining and measuring government subsidies, examines why and how government subsidies are used as a fiscal policy tool, discusses their economic effects, appraises international empirical evidence on government subsidies, and offers options for their reform. Evidence from recent studies suggests that government expenditures on subsidies remain high in many countries, often amounting to several percentage points of GDP. Subsidization on such a scale implies substantial opportunity costs. There are at least three compelling reasons for studying government subsidy behavior. First, subsidies are a major instrument of government expenditure policy. Second, on a domestic level, subsidies affect domestic resource allocation decisions, income distribution, expenditure productivity

Export subsidy

An export subsidy is a support from the government for products that are exported, as a means of assisting the country's balance of payments. Usha Haley and George Haley identified the subsidies to manufacturing industry provided by the Chinese Government and how they have altered trade patterns. Traditionally, economists have argued that subsidies benefit consumers but hurt the subsidizing countries. Haley and Haley provided data to show that over the decade after China joined the World Trade Organization industrial subsidies have helped give China an advantage in industries in which they previously enjoyed no comparative advantage such as the steel, glass, paper, auto parts, and solar industries.

Export subsidy is known for being abused. For example, some exporters substantially over declare the value of their goods so as to benefit more from the export subsidy. Another method is to export a batch of goods to a foreign country but the same goods will be re-imported by the same trader via a circuitous route and changing the product description so as to obscure their origin. Thus the trader benefits from the export subsidy without creating real trade value to the economy. Export subsidy as such can become a self-defeating and disruptive policy.

Import subsidy

An import subsidy is support from the government for products that are imported. Rarer than an export subsidy, an import subsidy further reduces the price to consumers for imported goods. Import subsidies have various effects depending on the subject. For example, consumers in the importing country are better off and experience an increase in consumer welfare due to the decrease in price of the imported goods, as well as the decrease in price of the domestic substitute goods. Conversely, the consumers in the exporting country experience a decrease in consumer welfare due to an increase in the price of their domestic goods. Furthermore, producers of the importing country experience a loss of welfare due to a decrease of the price for the good in their market, while on the other side, the exporters of the producing country experience an increase in well being due to the increase in demand. Ultimately, the import subsidy is rarely used due to an overall loss of welfare for the country due to a decrease in domestic production and a reduction in production throughout the world. However, that can result in a redistribution of income.

Employment subsidy

An employment subsidy serves as an incentive to businesses to provide more job opportunities to reduce the level of unemployment in the country (income subsidies) or to encourage research and development. With an employment subsidy, the government provides assistance with wages. Another form of employment subsidy is the social security benefits. Employment subsidies allow a person receiving the benefit to enjoy some minimum standard of living.

Tax subsidy

Government can create the same outcome through selective tax breaks as through cash payment. For example, suppose a government sends monetary assistance that reimburses 15% of all health expenditures to a group that is paying 15% income tax. Exactly the same subsidy is achieved by giving a health tax deduction. Tax subsidies are also known as tax expenditures. Tax subsidies are one of the main explanations for why the American tax code is so complicated.

Tax breaks are often considered to be a subsidy. Like other subsidies, they distort the economy; but tax breaks are also less transparent, and are difficult to undo.

Transport subsidies

Some governments subsidize transport, especially rail and bus transport which decrease congestion and pollution compared to cars. In the EU, rail subsidies are around €73 billion and in China they reach $130 billion.

Publicly owned airports can be an indirect subsidy if they lose money. The European Union for instance criticizes Germany for its high number of money losing airports that are used primarily by low cost carriers, characterizing the arrangement as an illegal subsidy.

In many countries roads and highways are paid for through general revenue rather than tolls or other dedicated sources only paid by road users creating an indirect subsidy for road transportation. For instance the fact that long distance buses in Germany do not pay tolls has been called a subsidy by critics pointing to track access charges for railways.

Oil subsidies

An oil subsidy is one aimed at decreasing the overall price of oil. Oil subsidies have always played a major part in U.S. history. These began as early as World War I and have increased in the following decades. However, due to changes in the perceptions of the environment, in 2012 President Barack Obama ended the subsidies to the oil industry, which were, at the time, $4 billion.

Housing subsidies

Housing subsidies are designed to promote the construction industry and home ownership. As of 2018, housing subsidies total around $15 billion per year. Housing subsidies can come in two types; assistance with down payment and interest rate subsidies. The deduction of mortgage interest from the federal income tax accounts for the largest interest rate subsidy. Additionally, the federal government will help low-income families with the down payment, coming to $10.9 million in 2008. Removing energy subsidies is viewed as a necessary measure to combat greenhouse gas emissions as it helps decrease energy consumption.

Environmental externalities

As well as the conventional and formal subsidies as outlined above there are myriad implicit subsidies principally in the form of environmental externalities. These subsidies include anything that is omitted but not accounted for and thus is an externality. These include things such as car drivers who pollute everyone's atmosphere without compensating everyone, farmers who use pesticides which can pollute everyone's ecosystems again without compensating everyone, or Britain's electricity production which results in additional acid rain in Scandinavia. In these examples the polluter is effectively gaining a net benefit but not compensating those affected. Although they are not subsidies in the form of direct economic support from the Government, they are no less economically, socially and environmentally harmful.

A 2015 report studied the implicit subsidies accruing to 20 fossil fuel companies and found that, while highly profitable, the hidden economic cost to society was also large. The report spans the period 2008–2012 and notes that: "for all companies and all years, the economic cost to society of their CO2 emissions was greater than their after‐tax profit, with the single exception of ExxonMobil in 2008." Pure coal companies fare even worse: "the economic cost to society exceeds total revenue (employment, taxes, supply purchases, and indirect employment) in all years, with this cost varying between nearly $2 and nearly $9 per $1 of revenue."

Categorising subsidies

Broad and narrow

These various subsidies can be divided into broad and narrow. Narrow subsidies are those monetary transfers that are easily identifiable and have a clear intent. They are commonly characterised by a monetary transfer between governments and institutions or businesses and individuals. A classic example is a government payment to a farmer.

Conversely broad subsidies include both monetary and non-monetary subsidies and is often difficult to identify. A broad subsidy is less attributable and less transparent. Environmental externalities are the most common type of broad subsidy.

Economic effects

Subsidy- visualization.jpg
Competitive equilibrium is a state of balance between buyers and suppliers, in which the quantity demanded of a good is the quantity supplied at a specified price. When the quantity demand exceeds the equilibrium quantity, price falls; conversely, a reduction in the supply of a good beyond equilibrium quantity implies an increase in the price. The effect of a subsidy is to shift the supply or demand curve to the right (i.e. increases the supply or demand) by the amount of the subsidy. If a consumer is receiving the subsidy, a lower price of a good resulting from the marginal subsidy on consumption increases demand, shifting the demand curve to the right. If a supplier is receiving the subsidy, an increase in the price (revenue) resulting from the marginal subsidy on production results increases supply, shifting the supply curve to the right. 

Subsidy - visualization 2.tiff
Assuming the market is in a perfectly competitive equilibrium, a subsidy increases the supply of the good beyond the equilibrium competitive quantity. The imbalance creates dead-weight loss. Dead-weight loss from a subsidy is the amount by which the cost of the subsidy exceeds the gains of the subsidy. The magnitude of the dead-weight loss is dependent on the size of the subsidy. This is considered a market failure, or inefficiency.

Subsidies targeted at goods in one country, by lowering the price of those goods, make them more competitive against foreign goods, thereby reducing foreign competition. As a result, many developing countries cannot engage in foreign trade, and receive lower prices for their products in the global market. This is considered protectionism: a government policy to erect trade barriers in order to protect domestic industries. The problem with protectionism arises when industries are selected for nationalistic reasons (Infant-Industry), rather than to gain a comparative advantage. The market distortion, and reduction in social welfare, is the logic behind the World Bank policy for the removal of subsidies in developing countries.

Subsidies create spillover effects in other economic sectors and industries. A subsidized product sold in the world market lowers the price of the good in other countries. Since subsidies result in lower revenues for producers of foreign countries, they are a source of tension between the United States, Europe and poorer developing countries. While subsidies may provide immediate benefits to an industry, in the long-run they may prove to have unethical, negative effects. Subsidies are intended to support public interest, however, they can violate ethical or legal principles if they lead to higher consumer prices or discriminate against some producers to benefit others. For example, domestic subsidies granted by individual US states may be unconstitutional if they discriminate against out-of-state producers, violating the Privileges and Immunities Clause or the Dormant Commerce Clause of the United States Constitution. Depending on their nature, subsidies are discouraged by international trade agreements such as the World Trade Organization (WTO). This trend, however, may change in the future, as needs of sustainable development and environmental protection could suggest different interpretations regarding energy and renewable energy subsidies.

Perverse subsidies

Definitions

Although subsidies can be important, many are "perverse", in the sense of having adverse unintended consequences. To be "perverse", subsidies must exert effects that are demonstrably and significantly adverse both economically and environmentally. A subsidy rarely, if ever, starts perverse, but over time a legitimate efficacious subsidy can become perverse or illegitimate if it is not withdrawn after meeting its goal or as political goals change. Perverse subsidies are now so widespread that as of 2007 they amounted $2 trillion per year in the six most subsidized sectors alone (agriculture, fossil fuels, road transportation, water, fisheries and forestry).

Effects

The detrimental effects of perverse subsidies are diverse in nature and reach. Case-studies from differing sectors are highlighted below but can be summarized as follows. 

Directly, they are expensive to governments by directing resources away from other legitimate should priorities (such as environmental conservation, education, health, or infrastructure).

Indirectly, they cause environmental degradation (exploitation of resources, pollution, loss of landscape, misuse and overuse of supplies) which, as well as its fundamental damage, acts as a further brake on economies; tend to benefit the few at the expense of the many, and the rich at the expense of the poor; lead to further polarization of development between the Northern and Southern hemispheres; lower global market prices; and undermine investment decisions reducing the pressure on businesses to become more efficient. Over time the latter effect means support becomes enshrined in human behavior and business decisions to the point where people become reliant on, even addicted to, subsidies, 'locking' them into society.

Consumer attitudes do not change and become out-of-date, off-target and inefficient; furthermore, over time people feel a sense of historical right to them. Despite governments being responsible for the creation and (lack of) termination of subsidies, it is ironic that perverse subsidies are not tackled more rigorously, particularly as the above highlight their contradiction to the majority of governments' stated policies.

Implementation

Perverse subsidies are not tackled as robustly as they should be. Principally, this is because they become 'locked' into society, causing bureaucratic roadblocks and institutional inertia. When cuts are suggested many argue (most fervently by those 'entitled', special interest groups and political lobbyists) that it will disrupt and harm the lives of people who receive them, distort domestic competitiveness curbing trade opportunities, and increase unemployment. Individual governments recognize this as a 'prisoner's dilemma' – inasmuch that even if they wanted to adopt subsidy reform, by acting unilaterally they fear only negative effects will ensue if others do not follow. Furthermore, cutting subsidies, however perverse they may be, is considered a vote-losing policy.

Reform of perverse subsidies is at a propitious time. The current economic conditions mean governments are forced into fiscal constraints and are looking for ways to reduce activist roles in their economies. There are two main reform paths: unilateral and multilateral. Unilateral agreements (one country) are less likely to be undertaken for the reasons outlined above, although New Zealand, Russia, Bangladesh and others represent successful examples. Multilateral actions by several countries are more likely to succeed as this reduces competitiveness concerns, but are more complex to implement requiring greater international collaboration through a body such as the WTO. Irrespective of the path, the aim of policymakers should be to: create alternative policies that target the same issue as the original subsidies but better; develop subsidy removal strategies allowing market-discipline to return; introduce 'sunset' provisions that require remaining subsidies to be re-justified periodically; and make perverse subsidies more transparent to taxpayers to alleviate the 'vote-loser' concern.

Examples

Agricultural subsidies

Support for agriculture dates back to the 19th century. It was developed extensively in the EU and USA across the two World Wars and the Great Depression to protect domestic food production, but remains important across the world today. In 2005, US farmers received $14 billion and EU farmers $47 billion in agricultural subsidies. Today, agricultural subsidies are defended on the grounds of helping farmers to maintain their livelihoods. The majority of payments are based on outputs and inputs and thus favour the larger producing agribusinesses over the small-scale farmers. In the USA nearly 30% of payments go to the top 2% of farmers.

By subsidizing inputs and outputs through such schemes as 'yield based subsidization', farmers are encouraged to: over-produce using intensive methods including using more fertilizers and pesticides; grow high-yielding monocultures; reduce crop rotation; shorten fallow periods; and promote exploitative land use change from forests, rainforests and wetlands to agricultural land. These all lead to severe environmental degradation including adverse effects on: soil quality and productivity including erosion, nutrient supply and salinity which in turn affects carbon storage and cycling, water retention and drought resistance; water quality including pollution, nutrient deposition and eutrophication of waterways, and lowering of water tables; diversity of flora and fauna including indigenous species both directly and indirectly through the destruction of habitats, resulting in a genetic wipe-out.

Cotton growers in the US reportedly receive half their income from the government under the Farm Bill of 2002. The subsidy payments stimulated overproduction and resulted in a record cotton harvest in 2002, much of which had to be sold at very reduced prices in the global market. For foreign producers, the depressed cotton price lowered their prices far below the break-even price. In fact, African farmers received 35 to 40 cents per pound for cotton, while US cotton growers, backed by government agricultural payments, received 75 cents per pound. Developing countries and trade organizations argue that poorer countries should be able to export their principal commodities to survive, but protectionist laws and payments in the United States and Europe prevent these countries from engaging in international trade opportunities.

Fisheries

Today, much of the world's major fisheries are over-exploited; in 2002, the WWF estimate this at approximately 75%. Fishing subsidies include "direct assistant to fishers; loan support programs; tax preferences and insurance support; capital and infrastructure programs; marketing and price support programs; and fisheries management, research, and conservation programs." They promote the expansion of fishing fleets, the supply of larger and longer nets, larger yields and indiscriminate catch, as well as mitigating risks which encourages further investment into large-scale operations to the disfavor of the already struggling small-scale industry. Collectively, these result in the continued overcapitalization and overfishing of marine fisheries. 

There are four categories of fisheries subsidies. First are direct financial transfers. Second, are indirect financial transfers and services. Third, certain forms of intervention and fourth, not intervening. The first category regards direct payments from the government received by the fisheries industry. These typically effect profits of the industry in the short term and can be negative or positive. Category two pertains to government intervention, not involving those under the first category. These subsidies also affect the profits in the short term but typically are not negative. Category three regards intervention that results in a negative short-term economic impact, but economic benefits in the long term. These benefits are usually more general societal benefits such as the environment. The final category pertains to inaction by the government, allowing producers to impose certain production costs on others. These subsidies tend to lead to positive benefits in the short term but negative in the long term. 

Others

The US National Football League's (NFL) profits have topped records at $11 billion, the highest of all sports. The NFL had tax-exempt status until voluntarily relinquishing it in 2015, and new stadiums have been built with public subsidies.

The Commitment to Development Index (CDI), published by the Center for Global Development, measures the effect that subsidies and trade barriers actually have on the undeveloped world. It uses trade, along with six other components such as aid or investment, to rank and evaluate developed countries on policies that affect the undeveloped world. It finds that the richest countries spend $106 billion per year subsidizing their own farmers – almost exactly as much as they spend on foreign aid.

Contract

From Wikipedia, the free encyclopedia

A contract is a promise or set of promises that are legally enforceable and, if violated, allow the injured party access to legal remedies. Contract law recognizes and governs the rights and duties arising from agreements. In the Anglo-American common law, formation of a contract generally requires an offer, acceptance, consideration, and a mutual intent to be bound. Each party must have capacity to enter the contract. Although most oral contracts are binding, some types of contracts may require formalities such as being in the form of a signed, dated written agreement in order for a party to be bound to its terms. 

In the civil law tradition, contract law is a branch of the law of obligations.

Formation

At common law, the elements of a contract are offer, acceptance, intention to create legal relations, and consideration. 

Not all agreements are necessarily contractual, as the parties generally must be deemed to have an intention to be legally bound. A so-called gentlemen's agreement is one which is not intended to be legally enforceable, and "binding in honor only".

Offer and acceptance

In order for a contract to be formed, the parties must reach mutual assent (also called a meeting of the minds). This is typically reached through offer and an acceptance which does not vary the offer's terms, which is known as the "mirror image rule". An offer is a definite statement of the offeror's willingness to be bound should certain conditions be met. If a purported acceptance does vary the terms of an offer, it is not an acceptance but a counteroffer and, therefore, simultaneously a rejection of the original offer. The Uniform Commercial Code disposes of the mirror image rule in §2-207, although the UCC only governs transactions in goods in the USA. As a court cannot read minds, the intent of the parties is interpreted objectively from the perspective of a reasonable person, as determined in the early English case of Smith v Hughes [1871]. It is important to note that where an offer specifies a particular mode of acceptance, only an acceptance communicated via that method will be valid.

Contracts may be bilateral or unilateral. A bilateral contract is an agreement in which each of the parties to the contract makes a promise or set of promises to each other. For example, in a contract for the sale of a home, the buyer promises to pay the seller $200,000 in exchange for the seller's promise to deliver title to the property. These common contracts take place in the daily flow of commerce transactions, and in cases with sophisticated or expensive precedent requirements, which are requirements that must be met for the contract to be fulfilled.

Less common are unilateral contracts in which one party makes a promise, but the other side does not promise anything. In these cases, those accepting the offer are not required to communicate their acceptance to the offeror. In a reward contract, for example, a person who has lost a dog could promise a reward if the dog is found, through publication or orally. The payment could be additionally conditioned on the dog being returned alive. Those who learn of the reward are not required to search for the dog, but if someone finds the dog and delivers it, the promisor is required to pay. In the similar case of advertisements of deals or bargains, a general rule is that these are not contractual offers but merely an "invitation to treat" (or bargain), but the applicability of this rule is disputed and contains various exceptions. The High Court of Australia stated that the term unilateral contract is "unscientific and misleading".

In certain circumstances, an implied contract may be created. A contract is implied in fact if the circumstances imply that parties have reached an agreement even though they have not done so expressly. For example, John Smith, a former lawyer may implicitly enter a contract by visiting a doctor and being examined; if the patient refuses to pay after being examined, the patient has breached a contract implied in fact. A contract which is implied in law is also called a quasi-contract, because it is not in fact a contract; rather, it is a means for the courts to remedy situations in which one party would be unjustly enriched were he or she not required to compensate the other. Quantum meruit claims are an example.

Invitation to treat

Where something is advertised in a newspaper or on a poster, this will not normally constitute an offer but will instead be an invitation to treat, an indication that one or both parties are prepared to negotiate a deal.

The Carbolic Smoke Ball offer
 
An exception arises if the advertisement makes a unilateral promise, such as the offer of a reward, as in the famous case of Carlill v Carbolic Smoke Ball Co, decided in nineteenth-century England. Carbolic, a medical firm, advertised a smoke ball marketed as a wonder drug that would, according to the instructions, protect users from catching the flu. If it did not work, buyers would receive £100 and the company said that they had deposited £1,000 in the bank to show their good faith. When sued, Carbolic argued the advert was not to be taken as a serious, legally binding offer; instead it was "a mere puff", or gimmick. But the court of appeal held that it would appear to a reasonable man that Carbolic had made a serious offer, and determined that the reward was a contractual promise.

Although an invitation to treat cannot be accepted, it should not be ignored, for it may nevertheless affect the offer. For instance, where an offer is made in response to an invitation to treat, the offer may incorporate the terms of the invitation to treat (unless the offer expressly incorporates different terms). If, as in the Boots case, the offer is made by an action without any negotiations (such as presenting goods to a cashier), the offer will be presumed to be on the terms of the invitation to treat.

Auctions are governed by the Sale of Goods Act 1979 (as amended), where section 57(2) provides: “A sale by auction is complete when the auctioneer announces its completion by the fall of the hammer, or in other customary manner. Until the announcement is made any bidder may retract his bid”.

Electronic contracts

Entry into contracts online has become common. Many jurisdictions have passed e-signature laws that have made the electronic contract and signature as legally valid as a paper contract. 

In India, E-contracts are governed by the Indian Contract Act (1872), according to which certain conditions need to be fulfilled while formulating a valid contact. Certain sections in information Technology Act (2000) also provide for validity of online contract.

In some U.S. states, email exchanges have become binding contracts. New York courts in 2016 held that the principles of real estate contracts to apply equally to electronic communications and electronic signatures, so long as “its contents and subscription meet all requirements of the governing statute” and pursuant to the Electronic Signatures and Records Act (ESRA).

Intention to be legally bound

In commercial agreements it is presumed that parties intend to be legally bound unless the parties expressly state the opposite as in a heads of agreement document. For example, in Rose & Frank Co v JR Crompton & Bros Ltd an agreement between two business parties was not enforced because an 'honour clause' in the document stated "this is not a commercial or legal agreement, but is only a statement of the intention of the parties". 

In contrast, domestic and social agreements such as those between children and parents are typically unenforceable on the basis of public policy. For example, in the English case Balfour v. Balfour a husband agreed to give his wife £30 a month while he was away from home, but the court refused to enforce the agreement when the husband stopped paying. In contrast, in Merritt v Merritt the court enforced an agreement between an estranged couple because the circumstances suggested their agreement was intended to have legal consequences.

Consideration

A concept of English common law, consideration is required for simple contracts but not for special contracts (contracts by deed). The court in Currie v Misa  declared consideration to be a “Right, Interest, Profit, Benefit, or Forbearance, Detriment, Loss, Responsibility”. Thus, consideration is a promise of something of value given by a promissor in exchange for something of value given by a promisee; and typically the thing of value is goods, money, or an act. Forbearance to act, such as an adult promising to refrain from smoking, is enforceable only if one is thereby surrendering a legal right.

In Dunlop v. Selfridge Lord Dunedin adopted Pollack's metaphor of purchase and sale to explain consideration. He called consideration 'the price for which the promise of the other is bought'.

In colonial times, the concept of consideration was exported to many common law countries, but it is unknown in Scotland and in civil law jurisdictions. Roman law-based systems neither require nor recognize consideration, and some commentators have suggested that consideration be abandoned, and estoppel be used to replace it as a basis for contracts. However, legislation, rather than judicial development, has been touted as the only way to remove this entrenched common law doctrine. Lord Justice Denning famously stated that "The doctrine of consideration is too firmly fixed to be overthrown by a side-wind." In the United States, the emphasis has shifted to the process of bargaining as exemplified by Hamer v. Sidway (1891).

Courts will typically not weigh the "adequacy" of consideration provided the consideration is determined to be "sufficient", with sufficiency defined as meeting the test of law, whereas "adequacy" is the subjective fairness or equivalence. For instance, agreeing to sell a car for a penny may constitute a binding contract (although if the transaction is an attempt to avoid tax, it will be treated by the tax authority as though a market price had been paid). Parties may do this for tax purposes, attempting to disguise gift transactions as contracts. This is known as the peppercorn rule, but in some jurisdictions, the penny may constitute legally insufficient nominal consideration. An exception to the rule of adequacy is money, whereby a debt must always be paid in full for "accord and satisfaction".

However, consideration must be given as part of entering the contract, not prior as in past consideration. For example, in the early English case of Eastwood v. Kenyon [1840], the guardian of a young girl took out a loan to educate her. After she was married, her husband promised to pay the debt but the loan was determined to be past consideration. The insufficiency of past consideration is related to the preexisting duty rule. In the early English case of Stilk v. Myrick [1809], a captain promised to divide the wages of two deserters among the remaining crew if they agreed to sail home short-handed; however, this promise was found unenforceable as the crew were already contracted to sail the ship. The preexisting duty rule also extends to general legal duties; for example, a promise to refrain from committing a tort or crime is not sufficient.

Capacity

Sometimes the capacity of either natural or artificial persons to either enforce contracts, or have contracts enforced against them is restricted. For instance, very small children may not be held to bargains they have made, on the assumption that they lack the maturity to understand what they are doing; errant employees or directors may be prevented from contracting for their company, because they have acted ultra vires (beyond their power). Another example might be people who are mentally incapacitated, either by disability or drunkenness.

Each contractual party must be a "competent person" having legal capacity. The parties may be natural persons ("individuals") or juristic persons ("corporations"). An agreement is formed when an "offer" is accepted. The parties must have an intention to be legally bound; and to be valid, the agreement must have both proper "form" and a lawful object. In England (and in jurisdictions using English contract principles), the parties must also exchange "consideration" to create a "mutuality of obligation," as in Simpkins v Pays.

In the United States, persons under 18 are typically minor and their contracts are considered voidable; however, if the minor voids the contract, benefits received by the minor must be returned. The minor can enforce breaches of contract by an adult while the adult's enforcement may be more limited under the bargain principle. Promissory estoppel or unjust enrichment may be available, but generally are not.

Formalities and writing requirements for some contracts

A contract is often evidenced in writing or by deed, the general rule is that a person who signs a contractual document will be bound by the terms in that document, this rule is referred to as the rule in L'Estrange v Graucob. This rule is approved by the High Court of Australia in Toll(FGCT) Pty Ltd v Alphapharm Pty Ltd. But a valid contract may (with some exceptions) be made orally or even by conduct. Remedies for breach of contract include damages (monetary compensation for loss) and, for serious breaches only, repudiation (i.e. cancellation). The equitable remedy of specific performance, enforceable through an injunction, may be available if damages are insufficient.

Typically, contracts are oral or written, but written contracts have typically been preferred in common law legal systems; in 1677 England passed the Statute of Frauds which influenced similar statute of frauds laws in the United States and other countries such as Australia. In general, the Uniform Commercial Code as adopted in the United States requires a written contract for tangible product sales in excess of $500, and real estate contracts are required to be written. If the contract is not required by law to be written, an oral contract is valid and therefore legally binding. The United Kingdom has since replaced the original Statute of Frauds, but written contracts are still required for various circumstances such as land (through the Law of Property Act 1925). 

An oral contract may also be called a parol contract or a verbal contract, with "verbal" meaning "spoken" rather than "in words", an established usage in British English with regards to contracts and agreements, and common although somewhat deprecated as "loose" in American English.

If a contract is in a written form, and somebody signs it, then the signer is typically bound by its terms regardless of whether they have actually read it provided the document is contractual in nature. However, affirmative defenses such as duress or unconscionability may enable the signer to avoid the obligation. Further, reasonable notice of a contract's terms must be given to the other party prior to their entry into the contract.

An unwritten, unspoken contract, also known as "a contract implied by the acts of the parties", which can be either an implied-in-fact contract or implied-in-law contract, may also be legally binding. Implied-in-fact contracts are real contracts under which the parties receive the "benefit of the bargain". However, contracts implied in law are also known as quasi-contracts, and the remedy is quantum meruit, the fair market value of goods or services rendered.

Contract terms: construction and interpretation

A contractual term is "an[y] provision forming part of a contract". Each term gives rise to a contractual obligation, breach of which can give rise to litigation. Not all terms are stated expressly and some terms carry less legal weight as they are peripheral to the objectives of the contract.

Uncertainty, incompleteness and severance

If the terms of the contract are uncertain or incomplete, the parties cannot have reached an agreement in the eyes of the law. An agreement to agree does not constitute a contract, and an inability to agree on key issues, which may include such things as price or safety, may cause the entire contract to fail. However, a court will attempt to give effect to commercial contracts where possible, by construing a reasonable construction of the contract. In New South Wales, even if there is uncertainty or incompleteness in a contract, the contract may still be binding on the parties if there is a sufficiently certain and complete clause requiring the parties to undergo arbitration, negotiation or mediation.

Courts may also look to external standards, which are either mentioned explicitly in the contract or implied by common practice in a certain field. In addition, the court may also imply a term; if price is excluded, the court may imply a reasonable price, with the exception of land, and second-hand goods, which are unique.

If there are uncertain or incomplete clauses in the contract, and all options in resolving its true meaning have failed, it may be possible to sever and void just those affected clauses if the contract includes a severability clause. The test of whether a clause is severable is an objective test—whether a reasonable person would see the contract standing even without the clauses. Typically, non-severable contracts only require the substantial performance of a promise rather than the whole or complete performance of a promise to warrant payment. However, express clauses may be included in a non-severable contract to explicitly require the full performance of an obligation.

Classification of terms

Contractual terms are classified differently depending upon the context or jurisdiction. Terms establish conditions precedent. English (but not necessarily non-English) common law distinguishes between important conditions and warranties, with a breach of a condition by one party allowing the other to repudiate and be discharged while a warranty allows for remedies and damages but not complete discharge. Whether or not a term is a condition is determined in part by the parties' intent.

In a less technical sense, however, a condition is a generic term and a warranty is a promise. Not all language in the contract is determined to be a contractual term. Representations, which are often precontractual, are typically less strictly enforced than terms, and material misrepresentations historically was a cause of action for the tort of deceit. Warranties were enforced regardless of materiality; in modern United States law the distinction is less clear but warranties may be enforced more strictly. Statements of opinion may be viewed as "mere puff". 

In specific circumstances these terms are used differently. For example, in English insurance law, violation of a "condition precedent" by an insured is a complete defense against the payment of claims. In general insurance law, a warranty is a promise that must be complied with. In product transactions, warranties promise that the product will continue to function for a certain period of time.
In the United Kingdom the courts determine whether a term is a condition or warranty; for example, an actress' obligation to perform the opening night of a theatrical production is a condition, but a singer's obligation to rehearse may be a warranty. Statute may also declare a term or nature of term to be a condition or warranty; for example the Sale of Goods Act 1979 s15A provides that terms as to title, description, quality and sample are generally conditions. The United Kingdom has also contrived the concept of an "intermediate term" (also called innominate), first established in Hong Kong Fir Shipping Co Ltd v Kawasaki Kisen Kaisha Ltd [1962].

Representations versus warranties

Statements of fact in a contract or in obtaining the contract are considered to be either warranties or representations. Traditionally, warranties are factual promises which are enforced through a contract legal action, regardless of materiality, intent, or reliance. Representations are traditionally precontractual statements which allow for a tort-based action (such as the tort of deceit) if the misrepresentation is negligent or fraudulent; historically a tort was the only action available, but by 1778, breach of warranty became a separate legal contractual action. In U.S. law, the distinction between the two is somewhat unclear; warranties are viewed as primarily contract-based legal action while negligent or fraudulent misrepresentations are tort-based, but there is a confusing mix of case law in the United States. In modern English law, sellers often avoid using the term 'represents' in order to avoid claims under the Misrepresentation Act 1967, while in America 'warrants and represents' is relatively common. Some modern commentators suggest avoiding the words and substituting 'state' or 'agree', and some model forms do not use the words; however, others disagree.

Statements in a contract may not be upheld if the court finds that the statements are subjective or promotional puffery. English courts may weigh the emphasis or relative knowledge in determining whether a statement is enforceable as part of the contract. In the English case of Bannerman v White the court upheld a rejection by a buyer of hops which had been treated with sulphur since the buyer explicitly expressed the importance of this requirement. The relative knowledge of the parties may also be a factor, as in English case of Bissett v Wilkinson where the court did not find misrepresentation when a seller said that farmland being sold would carry 2000 sheep if worked by one team; the buyer was considered sufficiently knowledgeable to accept or reject the seller's opinion.

Standard terms and contracts of adhesion

Standard form contracts contain "boilerplate", which is a set of "one size fits all" contract provisions. However, the term may also narrowly refer to conditions at the end of the contract which specify the governing law provision, venue, assignment and delegation, waiver of jury trial, notice, and force majeure. Restrictive provisions in contracts where the consumer has little negotiating power ("contracts of adhesion") attract consumer protection scrutiny.

Implied terms

A term may either be express or implied. An express term is stated by the parties during negotiation or written in a contractual document. Implied terms are not stated but nevertheless form a provision of the contract.

Terms implied in fact

Terms may be implied due to the factual circumstances or conduct of the parties. In the case of BP Refinery (Westernport) Pty Ltd v Shire of Hastings, the UK Privy Council, on appeal from Australia, proposed a five-stage test to determine situations where the facts of a case may imply terms. The classic tests have been the "business efficacy test" and the "officious bystander test". Under the "business efficacy test" first proposed in The Moorcock [1889], the minimum terms necessary to give business efficacy to the contract will be implied. Under the officious bystander test (named in Southern Foundries (1926) Ltd v Shirlaw [1940] but actually originating in Reigate v. Union Manufacturing Co (Ramsbottom) Ltd [1918]), a term can only be implied in fact if an "officious bystander" listening to the contract negotiations suggested that the term be included the parties would promptly agree. The difference between these tests is questionable.

Terms implied in law

Statutes or judicial rulings may create implied contractual terms, particularly in standardized relationships such as employment or shipping contracts. The Uniform Commercial Code of the United States also imposes an implied covenant of good faith and fair dealing in performance and enforcement of contracts covered by the Code. In addition, Australia, Israel and India imply a similar good faith term through laws.

In England, some contracts (insurance and partnerships) require utmost good faith, while others may require good faith (employment contracts and agency). Most English contracts do not need any good faith, provided that the law is met. There is, however, an overarching concept of "legitimate expectation". 

Most countries have statutes which deal directly with sale of goods, lease transactions, and trade practices. In the United States, prominent examples include, in the case of products, an implied warranty of merchantability and fitness for a particular purpose, and in the case of homes an implied warranty of habitability. 

In the United Kingdom, implied terms may be created by:

Terms implied by custom

A term may be implied on the basis of custom or usage in a particular market or context. In the Australian case of Con-Stan Industries of Australia Pty Ltd v Norwich Winterthur (Aust) Limited, the requirements for a term to be implied by custom were set out. For a term to be implied by custom it needs to be "so well known and acquiesced in that everyone making a contract in that situation can reasonably be presumed to have imported that term into the contract".

Third parties

The common law doctrine of privity of contract provides that only those who are party to a contract may sue or be sued on it. The leading case of Tweddle v Atkinson [1861] immediately showed that the doctrine had the effect of defying the intent of the parties. In maritime law, the cases of Scruttons v Midland Silicones [1962] and N.Z. Shipping v Satterthwaite [1975], established how third parties could gain the protection of limitation clauses within a bill of lading. Some common law exceptions such as agency, assignment and negligence allowed some circumvention of privity rules, but the unpopular doctrine remained intact until it was amended by the Contracts (Rights of Third Parties) Act 1999 which provides:
A person who is not a party to a contract (a “third party”) may in his own right enforce a contract if:
(a) the contract expressly provides that he may, or
(b) the contract purports to confer a benefit on him.

Performance

Performance varies according to the particular circumstances. While a contract is being performed, it is called an executory contract, and when it is completed it is an executed contract. In some cases there may be substantial performance but not complete performance, which allows the performing party to be partially compensated.

Defenses

Vitiating factors constituting defences to purported contract formation include:
Such defenses operate to determine whether a purported contract is either (1) void or (2) voidable. Void contracts cannot be ratified by either party. Voidable contracts can be ratified.

Misrepresentation

Misrepresentation means a false statement of fact made by one party to another party and has the effect of inducing that party into the contract. For example, under certain circumstances, false statements or promises made by a seller of goods regarding the quality or nature of the product that the seller has may constitute misrepresentation. A finding of misrepresentation allows for a remedy of rescission and sometimes damages depending on the type of misrepresentation.

There are two types of misrepresentation: fraud in fact and fraud in inducement. Fraud in fact focuses on whether the party alleging misrepresentation knew they were creating a contract. If the party did not know that they were entering into a contract, there is no meeting of the minds, and the contract is void. Fraud in inducement focuses on misrepresentation attempting to get the party to enter into the contract. Misrepresentation of a material fact (if the party knew the truth, that party would not have entered into the contract) makes a contract voidable.

According to Gordon v Selico [1986] it is possible to misrepresent either by words or conduct. Generally, statements of opinion or intention are not statements of fact in the context of misrepresentation. If one party claims specialist knowledge on the topic discussed, then it is more likely for the courts to hold a statement of opinion by that party as a statement of fact.

It is a fallacy that an opinion cannot be a statement of fact. If a statement is the honest expression of an opinion honestly entertained, it cannot be said that it involves any fraudulent misrepresentations of fact.

Remedies for misrepresentation. Rescission is the principal remedy and damages are also available if a tort is established. In order to obtain relief, there must be a positive misrepresentation of law and also, the representee must have been misled by and relied on this misrepresentation:Public Trustee v Taylor.

Mistake

A mistake is an incorrect understanding by one or more parties to a contract and may be used as grounds to invalidate the agreement. Common law has identified three types of mistake in contract: common mistake, mutual mistake, and unilateral mistake.
  • Common mistake occurs when both parties hold the same mistaken belief of the facts. This is demonstrated in the case of Bell v. Lever Brothers Ltd., which established that common mistake can only void a contract if the mistake of the subject-matter was sufficiently fundamental to render its identity different from what was contracted, making the performance of the contract impossible. In Great Peace Shipping Ltd v Tsavliris Salvage (International) Ltd, the court held that the common law will grant relief against common mistake, if the test in Bell v. Lever Bros Ltd is made out. If one party has knowledge and the other does not, and the party with the knowledge promises or guarantees the existence of the subject matter, that party will be in breach if the subject matter does not exist.
  • Mutual mistake occurs when both parties of a contract are mistaken as to the terms. Each believes they are contracting to something different. Courts usually try to uphold such mistakes if a reasonable interpretation of the terms can be found. However, a contract based on a mutual mistake in judgment does not cause the contract to be voidable by the party that is adversely affected. See Raffles v Wichelhaus.
  • Unilateral mistake occurs when only one party to a contract is mistaken as to the terms or subject-matter. The courts will uphold such a contract unless it was determined that the non-mistaken party was aware of the mistake and tried to take advantage of the mistake. It is also possible for a contract to be void if there was a mistake in the identity of the contracting party. An example is in Lewis v Avery where Lord Denning MR held that the contract can only be voided if the plaintiff can show that, at the time of agreement, the plaintiff believed the other party's identity was of vital importance. A mere mistaken belief as to the credibility of the other party is not sufficient.

Duress and undue influence

Duress has been defined as a "threat of harm made to compel a person to do something against his or her will or judgment; esp., a wrongful threat made by one person to compel a manifestation of seeming assent by another person to a transaction without real volition." An example is in Barton v Armstrong [1976] in a person was threatened with death if they did not sign the contract. An innocent party wishing to set aside a contract for duress to the person need only to prove that the threat was made and that it was a reason for entry into the contract; the burden of proof then shifts to the other party to prove that the threat had no effect in causing the party to enter into the contract. There can also be duress to goods and sometimes, 'economic duress'. 

Undue influence is an equitable doctrine that involves one person taking advantage of a position of power over another person through a special relationship such as between parent and child or solicitor and client. As an equitable doctrine, the court has discretion. When no special relationship exists, the question is whether there was a relationship of such trust and confidence that it should give rise to such a presumption.

Unconscionable dealing

In Australian law, a contract can be set aside due to unconscionable dealing. Firstly, the claimant must show that they were under a special disability, the test for this being that they were unable to act in their best interest. Secondly, the claimant must show that the defendant took advantage of this special disability.

Illegal contracts

If based on an illegal purpose or contrary to public policy, a contract is void. In the 1996 Canadian case of Royal Bank of Canada v. Newell a woman forged her husband's signature, and her husband signed agreed to assume "all liability and responsibility" for the forged checks. However, the agreement was unenforceable as it was intended to "stifle a criminal prosecution", and the bank was forced to return the payments made by the husband.

In the U.S., one unusual type of unenforceable contract is a personal employment contract to work as a spy or secret agent. This is because the very secrecy of the contract is a condition of the contract (in order to maintain plausible deniability). If the spy subsequently sues the government on the contract over issues like salary or benefits, then the spy has breached the contract by revealing its existence. It is thus unenforceable on that ground, as well as the public policy of maintaining national security (since a disgruntled agent might try to reveal all the government's secrets during his/her lawsuit). Other types of unenforceable employment contracts include contracts agreeing to work for less than minimum wage and forfeiting the right to workman's compensation in cases where workman's compensation is due.

Remedies for defendant on defenses

Setting aside the contract

There can be four different ways in which contracts can be set aside. A contract may be deemed 'void', 'voidable', 'unenforceable' or 'ineffective'. Voidness implies that a contract never came into existence. Voidability implies that one or both parties may declare a contract ineffective at their wish. Kill fees are paid by magazine publishers to authors when their articles are submitted on time but are subsequently not used for publication. When this occurs, the magazine cannot claim copyright for the "killed" assignment. Unenforceability implies that neither party may have recourse to a court for a remedy. Ineffectiveness implies that the contract terminates by order of a court where a public body has failed to satisfy public procurement law. To rescind is to set aside or unmake a contract.

Disputes

Procedure

In many countries, in order to obtain damages for breach of contract or to obtain specific performance or other equitable relief, the aggrieved injured party may file a civil (non-criminal) lawsuit in court.

In England and Wales, a contract may be enforced by use of a claim, or in urgent cases by applying for an interim injunction to prevent a breach. Likewise, in the United States, an aggrieved party may apply for injunctive relief to prevent a threatened breach of contract, where such breach would result in irreparable harm that could not be adequately remedied by money damages.

Arbitration

If the contract contains a valid arbitration clause then, prior to filing a lawsuit, the aggrieved party must submit an arbitration claim in accordance with the procedures set forth in the clause. Many contracts provide that all disputes arising thereunder will be resolved by arbitration, rather than litigated in courts. 

Arbitration judgments may generally be enforced in the same manner as ordinary court judgments, and are recognized and enforceable internationally under the New York Convention, which has 156 parties. However, in New York Convention states, arbitral decisions are generally immune unless there is a showing that the arbitrator's decision was irrational or tainted by fraud.

Some arbitration clauses are not enforceable, and in other cases arbitration may not be sufficient to resolve a legal dispute. For example, disputes regarding validity of registered IP rights may need to be resolved by a public body within the national registration system. For matters of significant public interest that go beyond the narrow interests of the parties to the agreement, such as claims that a party violated a contract by engaging in illegal anti-competitive conduct or committed civil rights violations, a court might find that the parties may litigate some or all of their claims even before completing a contractually agreed arbitration process.
United States
In the United States, thirty-five states (notably not including New York) and the District of Columbia have adopted the Uniform Arbitration Act to facilitate the enforcement of arbitrated judgments.

Customer claims against securities brokers and dealers are almost always resolved pursuant to contractual arbitration clauses, because securities dealers are required under the terms of their membership in self-regulatory organizations such as the Financial Industry Regulatory Authority (formerly the NASD) or NYSE to arbitrate disputes with their customers. The firms then began including arbitration agreements in their customer agreements, requiring their customers to arbitrate disputes.

Choice of law

When a contract dispute arises between parties that are in different jurisdictions, law that is applicable to a contract is dependent on the conflict of laws analysis by the court where the breach of contract action is filed In the absence of a choice of law clause, the court will normally apply either the law of the forum or the law of the jurisdiction that has the strongest connection to the subject matter of the contract. A choice of law clause allows the parties to agree in advance that their contract will be interpreted under the laws of a specific jurisdiction.

Within the United States, choice of law clauses are generally enforceable, although exceptions based upon public policy may at times apply. Within the European Union, even when the parties have negotiated a choice of law clause, conflict of law issues may be governed by the Rome I Regulation.

Choice of forum

Many contracts contain a forum selection clause setting out where disputes in relation to the contract should be litigated. The clause may be general, requiring that any case arising from the contract be filed within a specific state or country, or it may require that a case be filed in a specific court. For example, a choice of forum clause may require that a case be filed in the U.S. State of California, or it may require more specifically that the case be filed in the Superior Court for Los Angeles County.

A choice of law or venue is not necessarily binding upon a court. Based upon an analysis of the laws, rules of procedure and public policy of the state and court in which the case was filed, a court that is identified by the clause may find that it should not exercise jurisdiction, or a court in a different jurisdiction or venue may find that the litigation may proceed despite the clause. As part of that analysis, a court may examine whether the clause conforms with the formal requirements of the jurisdiction in which the case was filed (in some jurisdictions a choice of forum or choice of venue clause only limits the parties if the word "exclusive" is explicitly included in the clause). Some jurisdictions will not accept an action that has no connection to the court that was chosen, and others will not enforce a choice of venue clause when they consider themselves to be a more convenient forum for the litigation.

Some contracts are governed by multilateral instruments that require a non-chosen courts to dismiss cases, and require the recognition of judgements made by courts having jurisdiction based on a choice of court clause. For example, the Brussels regime instruments (31 European states) and the Hague Choice of Court Agreements Convention (European Union and Mexico), as well as several instruments related to a specific area of law, may require courts to enforce and recognize choice of law clauses and foreign judgments.

Remedies

In the United Kingdom, breach of contract is defined in the Unfair Contract Terms Act 1977 as: [i] non-performance, [ ii] poor performance, [iii] part-performance, or [iv] performance which is substantially different from what was reasonably expected. Innocent parties may repudiate (cancel) the contract only for a major breach (breach of condition), but they may always recover compensatory damages, provided that the breach has caused foreseeable loss. 

It was not possible to sue the Crown in the UK for breach of contract before 1948. However, it was appreciated that contractors might be reluctant to deal on such a basis and claims were entertained under a petition of right that needed to be endorsed by the Home Secretary and Attorney-General. S.1 Crown Proceedings Act 1947 opened the Crown to ordinary contractual claims through the courts as for any other person.

Damages

There are several different types of damages.
  • Compensatory damages, which are given to the party which was harmed by the breach of contract. With compensatory damages, there are two heads of loss, consequential damage and direct damage.
  • Liquidated damages are an estimate of loss agreed to in the contract, so that the court avoids calculating compensatory damages and the parties have greater certainty. Liquidated damages clauses may be called "penalty clauses" in ordinary language, but the law distinguishes between liquidated damages (legitimate) and penalties (invalid). A test for determining which category a clause falls into was established by the English House of Lords in Dunlop Pneumatic Tyre Co Ltd v New Garage & Motor Co Ltd
  • Nominal damages consist of a small cash amount where the court concludes that the defendant is in breach but the plaintiff has suffered no quantifiable pecuniary loss, and may be sought to obtain a legal record of who was at fault.
  • Punitive or exemplary damages are used to punish the party at fault; but even though such damages are not intended primarily to compensate, nevertheless the claimant (and not the state) receives the award. Exemplary damages are not recognised nor permitted in some jurisdictions. In the UK, exemplary damages are not available for breach of contract, but are possible after fraud. Although vitiating factors (such as misrepresentation, mistake, undue influence and duress) relate to contracts, they are not contractual actions, and so, in a roundabout way, a claimant in contract may be able to get exemplary damages.
Compensatory damages compensate the plaintiff for actual losses suffered as accurately as possible. They may be "expectation damages", "reliance damages" or "restitutionary damages". Expectation damages are awarded to put the party in as good of a position as the party would have been in had the contract been performed as promised. Reliance damages are usually awarded where no reasonably reliable estimate of expectation loss can be arrived at or at the option of the plaintiff. Reliance losses cover expense suffered in reliance to the promise. Examples where reliance damages have been awarded because profits are too speculative include the Australian case of McRae v Commonwealth Disposals Commission which concerned a contract for the rights to salvage a ship. In Anglia Television Ltd v. Reed the English Court of Appeal awarded the plaintiff expenditures incurred prior to the contract in preparation of performance.

After a breach has occurred, the innocent party has a duty to mitigate loss by taking any reasonable steps. Failure to mitigate means that damages may be reduced or even denied altogether. However, Professor Michael Furmston has argued that "it is wrong to express (the mitigation) rule by stating that the plaintiff is under a duty to mitigate his loss", citing Sotiros Shipping Inc v Sameiet, The Solholt. If a party provides notice that the contract will not be completed, an anticipatory breach occurs. 

Damages may be general or consequential. General damages are those damages which naturally flow from a breach of contract. Consequential damages are those damages which, although not naturally flowing from a breach, are naturally supposed by both parties at the time of contract formation. An example would be when someone rents a car to get to a business meeting, but when that person arrives to pick up the car, it is not there. General damages would be the cost of renting a different car. Consequential damages would be the lost business if that person was unable to get to the meeting, if both parties knew the reason the party was renting the car. However, there is still a duty to mitigate the losses. The fact that the car was not there does not give the party a right to not attempt to rent another car.

To recover damages, a claimant must show that the breach of contract caused foreseeable loss. Hadley v Baxendale established that the test of foreseeability is both objective or subjective. In other words, is it foreseeable to the objective bystander, or to the contracting parties, who may have special knowledge? On the facts of this case, where a miller lost production because a carrier delayed taking broken mill parts for repair, the court held that no damages were payable since the loss was foreseeable neither by the "reasonable man" nor by the carrier, both of whom would have expected the miller to have a spare part in store.

Specific performance

There may be circumstances in which it would be unjust to permit the defaulting party simply to buy out the injured party with damages. For example, where an art collector purchases a rare painting and the vendor refuses to deliver, the collector's damages would be equal to the sum paid. 

The court may make an order of what is called "specific performance", requiring that the contract be performed. In some circumstances a court will order a party to perform his or her promise (an order of "specific performance") or issue an order, known as an "injunction", that a party refrain from doing something that would breach the contract. A specific performance is obtainable for the breach of a contract to sell land or real estate on such grounds that the property has a unique value. In the United States by way of the 13th Amendment to the United States Constitution, specific performance in personal service contracts is only legal "as punishment for a crime whereof the criminal shall be dully convicted."

Both an order for specific performance and an injunction are discretionary remedies, originating for the most part in equity. Neither is available as of right and in most jurisdictions and most circumstances a court will not normally order specific performance. A contract for the sale of real property is a notable exception. In most jurisdictions, the sale of real property is enforceable by specific performance. Even in this case the defenses to an action in equity (such as laches, the bona fide purchaser rule, or unclean hands) may act as a bar to specific performance.

Related to orders for specific performance, an injunction may be requested when the contract prohibits a certain action. Action for injunction would prohibit the person from performing the act specified in the contract.

History

Whilst early rules of trade and barter have existed since ancient times, modern laws of contract in the West are traceable from the industrial revolution (1750 onward), when increasing numbers worked in factories for a cash wage. In particular, the growing strength of the British economy and the adaptability and flexibility of the English common law led to a swift development of English contract law, while the more rigid civil law in Europe lagged behind. Colonies within the British empire (including the USA and the Dominions) would adopt the law of the mother country. Civil law countries (especially Germany) later developed their own brand of contract law. In the 20th century, the growth of export trade led to countries adopting international conventions, such as the Hague-Visby Rules and the UN Convention on Contracts for the International Sale of Goods, to promote uniform regulations. 

Bill of sale of a male slave and a building in Shuruppak, Sumerian tablet, circa 2600 BC
 
Contract law is based on the principle expressed in the Latin phrase pacta sunt servanda, ( "agreements must be kept"). The common law of contract originated with the now-defuct writ of assumpsit, which was originally a tort action based on reliance. Contract law falls within the general law of obligations, along with tort, unjust enrichment, and restitution.

Jurisdictions vary in their principles of freedom of contract. In common law jurisdictions such as England and the United States, a high degree of freedom is the norm. For example, in American law, it was determined in the 1901 case of Hurley v. Eddingfield that a physician was permitted to deny treatment to a patient despite the lack of other available medical assistance and the patient's subsequent death. This is in contrast to the civil law, which typically applies certain overarching principles to disputes arising out of contract, as in the French Civil Code. Other legal systems such as Islamic law, socialist legal systems, and customary law have their own variations.

However, in both the European union and the United States, the need to prevent discrimination has eroded the full extent of freedom of contract. Legislation governing equality, equal pay, racial discrimination, disability discrimination and so on, has imposed limits of the full freedom of contract. For example, the Civil Rights Act of 1964 restricted private racial discrimination against African-Americans. In the early 20th century the United States underwent the "Lochner era", in which the Supreme Court of the United States struck down economic regulations on the basis of freedom of contract and the Due Process Clause; these decisions were eventually overturned and the Supreme Court established a deference to legislative statutes and regulations which restrict freedom of contract. The U.S. Constitution contains a Contract Clause, but this has been interpreted as only restricting the retroactive impairment of contracts.

Commercial use

Contracts are widely used in commercial law, and form the legal foundation for transactions across the world. Common examples include contracts for the sale of services and goods (both wholesale and retail), construction contracts, contracts of carriage, software licenses, employment contracts, insurance policies, sale or lease of land, and various other uses. 

Although the European Union is fundamentally an economic community with a range of trade rules, there is no overarching "EU Law of Contract". In 1993, Harvey McGregor, a British barrister and academic, produced a "Contract Code" under the auspices of the English and Scottish Law Commissions, which was a proposal to both unify and codify the contract laws of England and Scotland. This document was offered as a possible "Contract Code for Europe", but tensions between English and German jurists meant that this proposal has so far come to naught.

Contract theory

Contract theory is the body of legal theory that addresses normative and conceptual questions in contract law. One of the most important questions asked in contract theory is why contracts are enforced. One prominent answer to this question focuses on the economic benefits of enforcing bargains. Another approach, associated with Charles Fried, maintains that the purpose of contract law is to enforce promises. This theory is developed in Fried's book, Contract as Promise. Other approaches to contract theory are found in the writings of legal realists and critical legal studies theorists. 

More generally, writers have propounded Marxist and feminist interpretations of contract. Attempts at overarching understandings of the purpose and nature of contract as a phenomenon have been made, notably relational contract theory originally developed by U.S. contracts scholars Ian Roderick Macneil and Stewart Macaulay, building at least in part on the contract theory work of U.S. scholar Lon L. Fuller, while U.S. scholars have been at the forefront of developing economic theories of contract focusing on questions of transaction cost and so-called 'efficient breach' theory.

Another dimension of the theoretical debate in contract is its place within, and relationship to a wider law of obligations. Obligations have traditionally been divided into contracts, which are voluntarily undertaken and owed to a specific person or persons, and obligations in tort which are based on the wrongful infliction of harm to certain protected interests, primarily imposed by the law, and typically owed to a wider class of persons.

Recently it has been accepted that there is a third category, restitutionary obligations, based on the unjust enrichment of the defendant at the plaintiff's expense. Contractual liability, reflecting the constitutive function of contract, is generally for failing to make things better (by not rendering the expected performance), liability in tort is generally for action (as opposed to omission) making things worse, and liability in restitution is for unjustly taking or retaining the benefit of the plaintiff's money or work.

The common law describes the circumstances under which the law will recognise the existence of rights, privilege or power arising out of a promise.

Delayed-choice quantum eraser

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