Guide To Understanding
Acontract is a legally binding exchange of promises or agreement between parties that the law will enforce. Contract law is based on the Latin phrase pacta sunt servanda (pacts must be kept). Breach of contract is recognised by the law and remedies can be provided. Almost everyone makes contracts every day. Sometimes written contracts are required, e.g., when buying a house. However the vast majority of contracts can be and are made orally, like buying a law text book, or a coffee at a shop. Contract law can be classified, as is habitual in civil law systems, as part of a general law of obligations (along with tort, unjust enrichment or restitution).
In common law jurisdictions there are three key elements to the creation of a contract. These are offer and acceptance, consideration and an intention to create legal relations. In civil law systems the concept of consideration is not central. In addition, for some contracts formalities must be complied with under what is sometimes called a statute of frauds.
One of the most famous cases on forming a contract is Carlill v. Carbolic Smoke Ball Company, decided in nineteenth century England. A medical firm advertised that its new wonder drug, a smoke ball, would cure people's flu, and if it did not, buyers would receive £100. Many people sued for their £100 when it did not work. Fearing bankruptcy, Carbolic argued the advert was not to be taken as a serious, legally binding offer. It was merely an invitation to treat, or mere puff, a gimmick. But the court of appeal held that to a reasonable man Carbolic had made a serious offer. People had given good "consideration" for it by going to the "distinct inconvenience" of using a faulty product. "Read the advertisement how you will, and twist it about as you will," said Lord Justice Lindley, "here is a distinct promise expressed in language which is perfectly unmistakable."
Offer and Acceptance
Perhaps the most important feature of a contract is that one party makes an offer for a bargain that another accepts. This can be called a 'concurrence of wills' or a 'meeting of the minds' of two or more parties. There must be evidence that the parties had each from an objective perspective engaged in conduct manifesting their assent, and a contract will be formed when the parties have met such a requirement. An objective perspective means that it is only necessary that somebody gives the impression of offering or accepting contractual terms in the eyes of a reasonable person, not that they actually did want to contract.
The case of Carlill v. Carbolic Smoke Ball Co. (above) is an example of a 'unilateral contract', obligations are only imposed upon one party upon acceptance by performance of a condition. In the U.S., the general rule is that in "case of doubt, an offer is interpreted as inviting the offeree to accept either by promising to perform what the offer requests or by rendering the performance, as the offeree chooses."
Offer and acceptance does not always need to be expressed orally or in writing. An implied contract is one in which some of the terms are not expressed in words. This can take two forms. A contract which is implied in fact is one in which the circumstances imply that parties have reached an agreement even though they have not done so expressly. For example, by going to a doctor for a checkup, a patient agrees that he will pay a fair price for the service. If he refuses to pay after being examined, he 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. For example, say a plumber accidentally installs a sprinkler system in the lawn of the wrong house. The owner of the house had learned the previous day that his neighbor was getting new sprinklers. That morning, he sees the plumber installing them in his own lawn. Pleased at the mistake, he says nothing, and then refuses to pay when the plumber hands him the bill. Will the man be held liable for payment? Yes, if it could be proven that the man knew that the sprinklers were being installed mistakenly, the court would make him pay because of a quasi-contract. If that knowledge could not be proven, he would not be liable. Such a claim is also referred to as "quantum meruit".
Consideration and Estoppel
Consideration is a controversial requirement for contracts under common law (for example money). It is not necessary in civil law systems, and for that reason has come under increasing criticism. The idea is that both parties to a contract must bring something to the bargain. This can be either conferring an advantage on the other party, or incurring some kind of detriment or inconvenience. Three rules govern consideration.
- Consideration must be sufficient, but need not be adequate. For instance, agreeing to buy a car for a penny may constitute a binding contract. While consideration need not be adequate, contracts in which the consideration of one party greatly exceeds that of another may nevertheless be held invalid for lack of sufficient consideration. In such cases, the fact that the consideration is exceedingly unequal can be evidence that there was no consideration at all. Such contracts may also be held invalid for other reasons such as fraud, duress, unequal bargaining power, or being contrary to public policy. In some situations, a collateral contract may exist, whereby the existence of one contract provides consideration for another. Critics say consideration can be so small as to make the requirement of any consideration meaningless.
- Consideration must not be from the past. For instance, in Eastwood v. Kenyon, the guardian of a young girl raised a loan to educate the girl and to improve her marriage prospects. After her marriage, her husband promised to pay off the loan. It was held that the guardian could not enforce the promise as taking out the loan to raise and educate the girl was past consideration, because it was completed before the husband promised to repay it.
- Consideration must move from the promisee. For instance, it is good consideration for person A to pay person C in return for services rendered by person B. If there are joint promisees, then consideration need only to move from one of the promisees.
Civil law systems take the approach that an exchange of promises, or a concurrence of wills alone, rather than an exchange in valuable rights is the correct basis. So if you promised to give me a book, and I accepted your offer without giving anything in return, I would have a legal right to the book and you could not change your mind about giving me it as a gift. However, in common law systems the concept of culpa in contrahendo, a form of 'estoppel', is increasingly used to create obligations during pre-contractual negotiations. Estoppel is an equitable doctrine that provides for the creation of legal obligations if a party has given another an assurance and the other has relied on the assurance to his detriment. A number of 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 "The doctrine of consideration is too firmly fixed to be overthrown by a side-wind."
Intention to be legally bound
There is a presumption for commercial agreements that parties intend to be legally bound. On the other hand, many kinds of domestic and social agreements are unenforceable on the basis of public policy, for instance between children and parents. One early example is found in Balfour v. Balfour. Using contract-like terms, Mr Balfour had agreed to give his wife £30 a month as maintenance while he was living in Ceylon (Sri Lanka). Once he left, they separated and Mr Balfour stopped payments. Mrs Balfour brought an action to enforce the payments. At the Court of Appeal, the Court held that there was no enforceable agreement as there was not enough evidence to suggest that they were intending to be legally bound by the promise.
The case is often cited in conjunction with Merritt v. Merritt. Here the court distinguished the case from Balfour v. Balfour because Mr and Mrs Merritt, although married again, were estranged at the time the agreement was made. Therefore any agreement between them was made with the intention to create legal relations.
The Abstraction Principle
Germany has a special approach to contracts, which ties into property law. Their 'abstraction principle' (Abstraktionsprinzip) means that the personal obligation of contract forms separately to the title of property being conferred. When contracts are invalidated for some reason, e.g. a car buyer was so drunk that he lacked legal capacity to contract, the contractual obligation to pay can be invalidated separate from proprietary title of the car. Unjust enrichment law, rather than the law of contract, is then used to restore title to the rightful owner.
Formalities and Writing
Contrary to common wisdom, an informal exchange of promises can still be binding and legally as valid as a written contract. A spoken contract should be called an oral contract, which might considered a subset of verbal contracts. Any contract that uses words, spoken or written, is a verbal contract. Thus, all oral contracts and written contracts are verbal contracts. This is in contrast to a "non-verbal, non-oral contract," also known as "a contract implied by the acts of the parties", which can be either implied in fact or implied in law.
Most jurisdictions have rules of law or statutes which may render otherwise valid oral contracts unenforceable. This is especially true regarding oral contracts involving large amounts of money or real estate. For example, in the U.S., generally speaking, a contract is unenforceable if it violates the common law statute of frauds or equivalent state statutes, which require certain contracts to be in writing. An example of the above is an oral contract for the sale of a motorcycle for US$5,000 in a jurisdiction which requires a contract for the sale of goods over US$500 to be in writing to be enforceable. The point of the Statute of Frauds is to prevent false allegations of the existence of contracts that were never made, by requiring formal (i.e. written) evidence of the contract, however, a common remark is that more frauds have been committed through the application of the Statute of Frauds than have ever been prevented. Contracts that do not meet the requirements of common law or statutory Statutes of Frauds are unenforceable, but are not necessarily thereby void. However, a party unjustly enriched by an unenforceable contract may be subject to restitution for unjust enrichment. Statutes of Frauds are typically codified in state statutes covering specific types of contracts, such as contracts for the sale of real estate.
In Australia and many, if not all, jurisdictions which have adopted the common law of England, for contracts subject to legislation equivalent to the Statute of Frauds, there is no requirement for the entire contract to be in writing, although there must be a note or memorandum evidencing the contract, which may come into existence after the contract has been formed. The note or memorandum must be signed in some way, and a series of documents may be used in place of a single note or memorandum. It must contain all material terms of the contract, the subject matter and the parties to the contract. In England and Wales, the common law Statute of Frauds is still in force, but only for guarantees, which must be evidenced in writing, although the agreement may be made orally. Certain other kinds of contract must be in writing or they are void, for instance, for sale of land under s. 52, Law of Property Act 1925.
If a contract is in a written form, and somebody signs the contract, then the person is bound by its terms regardless of whether they have read it or not, provided the document is contractual in nature. Furthermore, if a party wishes to use a document as the basis of a contract, reasonable notice of its terms must be given to the other party prior to their entry into the contract. This includes such things as tickets issued at parking stations.
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