
Contracts are a set of promises made by two or more parties to each other. There are four main types of contracts: express, implied, unilateral, and bilateral. Express contracts are made by written or spoken language, stating the agreement and its terms in detail. Implied contracts, on the other hand, are formed by the behaviour of the parties involved, indicating their intent to enter into an agreement, regardless of whether there was a clear offer and acceptance expressed in writing or words. There are two types of implied contracts: implied-in-fact and implied-in-law. This paragraph will focus on the latter type, implied-in-law contracts, and whether they are bilateral.
| Characteristics | Values |
|---|---|
| Formation | Circumstances form the contract, rather than intent |
| Legally Binding | Yes |
| Mutual Assent | Not required |
| Meeting of the Minds | Not required |
| Written or Oral | Neither |
| Unjust Enrichment | Prevented |
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What You'll Learn

Implied-in-law contracts are legally binding despite no intention to create them
Implied-in-law contracts, also known as quasi-contracts, are legally binding despite no intention to create them. They are unwritten contracts formed by the circumstances and actions of the parties involved, rather than by mutual agreement. For example, if a customer enters a restaurant and orders food, an implied contract is created. The restaurant is obligated to serve the food, and the customer is obligated to pay for it. Implied-in-law contracts are not formed by intent but by circumstances, ensuring that a party is not unjustly enriched by the performance of another.
Implied-in-law contracts are different from implied-in-fact contracts, which are also a type of implied contract. Implied-in-fact contracts are created by the past conduct or behaviour of the parties involved, indicating that they understand the terms of the agreement and the actions that must be taken. For instance, a teenager who is rewarded with movie tickets for walking a neighbour's dog on several occasions could claim an implied-in-fact contract if the neighbour fails to provide the movie tickets on the last occasion.
While implied-in-law contracts do not require intent, they are legally binding. Courts are more likely to enforce contracts that are in writing and signed by both parties, but implied contracts are still legally enforceable and can be held up in court. It is crucial to understand the differences between implied and express contracts to avoid legal disputes and conflicts. Having all contracts in writing ensures that the terms and conditions are clear and that both parties are aware of their obligations.
Bilateral contracts, also known as two-party or two-sided contracts, are a common type of contract that involves an exchange of promises between two parties. Each party is considered both the beneficiary and the promisor, and they must fulfil their end of the bargain. Bilateral contracts can be written or verbal, and they are enforceable by law. In contrast, unilateral contracts involve one party making an open contract, with anyone free to accept the offer by performing the requested task. Only the offeror is legally bound in a unilateral contract once the task has been completed.
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They are also called quasi-contracts
Implied-in-law contracts, also known as quasi-contracts, are legally binding obligations that are created by law to serve the purpose of justice and prevent unjust enrichment. They are called quasi-contracts because they impose duties that arise from the operation of law, rather than from the mutual agreement or intention of the parties involved. Quasi-contracts are not formed by oral or written agreements but by circumstances and the actions of the parties. For example, if a customer orders food at a restaurant, an implied contract is created, obligating the restaurant to serve the food and the customer to pay for it.
Quasi-contracts are typically used in situations where one party has been unjustly enriched at the expense of another. In such cases, the law imposes a contractual obligation on the enriched party to compensate the other party, even though no express or implied contract exists between them. This ensures that the enriched party does not unfairly benefit from the other's services or performance.
In the United States, the government may bring a quasi-contractual suit for unjust enrichment to recover monies illegally or improperly disbursed. For example, in Mt. Sinai Hospital of Greater Miami v. Weinberger, the government proceeded against a defendant to recover monies disbursed under an erroneous understanding of the facts.
Quasi-contracts are distinct from implied-in-fact contracts, which are founded upon a meeting of the minds and inferred from the conduct of the parties. Implied-in-fact contracts assume that the parties understand the terms of the agreement and the actions required, even if there is no formal written or oral contract.
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They impose a legal obligation to compensate the other party
Implied-in-law contracts, also known as quasi-contracts, are legally binding agreements that are not formed by the express intention of the parties involved. Instead, they arise from the circumstances and actions of the parties, creating a legal obligation to compensate the other party. This type of contract ensures that a person who has provided services is not unjustly enriched by the performance of another without receiving compensation.
For example, if a customer enters a restaurant and orders food, an implied contract is created. The restaurant is obligated to serve the food, and the customer is obligated to pay the listed price. In this case, the customer has a legal obligation to compensate the restaurant for the food they ordered. Similarly, if a doctor dining at a restaurant saves a choking customer's life, the doctor is entitled to send a bill, and the saved customer is legally obligated to compensate the doctor.
Implied-in-law contracts are distinct from express contracts, which are formally arranged through oral or written agreements. While express contracts explicitly outline the obligations of each party, implied-in-law contracts derive their obligations from the circumstances and actions of the parties involved. This distinction is important because it highlights that implied-in-law contracts are not based on mutual agreement but rather on the legal principle of preventing unjust enrichment.
The legal obligation to compensate in implied-in-law contracts is crucial to maintaining fairness and equity in situations where services are provided without an express agreement. By imposing this obligation, the law ensures that individuals or entities providing services are compensated for their efforts, preventing the unjust enrichment of those receiving the services. This obligation also provides a framework for resolving disputes and determining appropriate compensation when implied-in-law contracts are breached.
In summary, implied-in-law contracts impose a legal obligation to compensate the other party based on the circumstances and actions of the parties involved. This obligation is inherent in the nature of these contracts and is essential to ensuring fairness and providing legal recourse in the absence of express agreements. Understanding implied-in-law contracts is crucial for individuals and businesses alike, as it helps manage expectations, mitigate risks, and navigate potential legal disputes.
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They are formed by circumstances, not intent
Implied-in-law contracts, also known as quasi-contracts, are legally binding obligations that are formed by circumstances and actions, rather than by mutual agreement or the intention of the parties involved. In other words, they are created by the court to promote fairness and equity, regardless of intent.
Implied-in-law contracts are imposed by courts to prevent unjust enrichment or to correct unjust enrichment. This type of contract ensures that someone for whom services were provided is not unjustly enriched by the performance of another. For instance, if a customer enters a restaurant and orders food, an implied contract is created. The restaurant owner is obligated to serve the food, and the customer is obligated to pay the listed price for it.
Implied-in-law contracts are often applied in situations where allowing one party to retain a benefit without paying would be unjust. For example, when an unconscious person receives emergency treatment, they are generally required to compensate the provider, even though they did not agree beforehand. Another example is when one person accidentally pays more than they owe or pays the wrong party; the law may require the recipient to return the excess payment.
Implied-in-law contracts differ from implied-in-fact contracts, which are formed when parties perform duties as if they have a contract in place. Implied-in-fact contracts assume that parties understand the terms of the agreement and what actions must be taken, even if there is no formal written or oral agreement. The terms and execution of the agreement are evidenced by the behaviour of the parties involved.
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They are not formed orally or in writing
Implied-in-law contracts, also known as quasi-contracts, are legally binding agreements that are not formed by the intention of the parties involved. Instead, they are formed by the circumstances and actions of the parties. For example, if a customer enters a restaurant and orders food, an implied contract is created. The restaurant owner is obligated to serve the food, and the customer is obligated to pay the listed price for it. In this case, the contract is formed by the circumstances of the situation and the actions of the parties involved, rather than through oral or written communication.
Implied-in-law contracts are distinct from express contracts, which are formally arranged through oral or written agreements. Express contracts involve mutual agreement and a meeting of the minds between the parties. While implied contracts may involve a form of mutual agreement, they are not explicitly formed through oral or written communication. Instead, they are implied through the behaviour and conduct of the parties.
The key difference between implied-in-law contracts and express contracts lies in their formation. Express contracts are typically written or oral agreements between two parties, with clear terms and conditions. Implied-in-law contracts, on the other hand, are not formed by explicit communication or intent. They arise from the actions, conduct, or circumstances of the parties involved. For example, if someone performs a service for another person, an implied-in-law contract may be created, obligating the recipient of the service to provide compensation.
While implied-in-law contracts are not formed orally or in writing, they are still legally enforceable and can be upheld in court. However, proving the existence of an implied contract can be more challenging compared to express contracts. Courts will often review the relationship between the parties, their past dealings, and the nature of the duties performed to determine the presence of an implied contract.
It is important to note that while implied-in-law contracts do not rely on oral or written communication for their formation, certain acts, such as offering and accepting a deal, are still crucial. These acts indicate the intention to enter into an agreement and form the basis for the implied contract. Therefore, while implied-in-law contracts are not formed orally or in writing, they still involve significant actions and behaviours that indicate a mutual understanding and agreement between the parties involved.
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Frequently asked questions
An implied-in-law contract, also known as a quasi-contract, is a legally binding contract that is formed by circumstances rather than the intent of the parties involved. It is an obligation created by law to prevent unjust enrichment.
An implied contract is formed by the behaviour of the parties involved, indicating their intent to enter into an agreement, regardless of whether a clear offer or acceptance was made.
Implied-in-fact contracts are created by the circumstances and behaviour of the parties involved, assuming that the parties understand the terms and what actions must be taken. On the other hand, implied-in-law contracts are not formed by intent but by circumstances, ensuring that a party does not benefit unjustly from the actions of another.
No, implied-in-law contracts are not bilateral. Bilateral contracts, also known as two-party or two-sided contracts, involve a mutual exchange of promises between two parties, where each party is both a beneficiary and a promise maker. Bilateral contracts are formed when there is an offer, acceptance, and mutual agreement, which is not the case for implied-in-law contracts.


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