
An implied contract is a legally binding obligation that is inferred from the actions, conduct, or circumstances of the parties involved, rather than from explicit words or written agreements. It is divided into two types: implied-in-fact and implied-in-law. This paragraph will focus on introducing the concept of a contract implied-in-law.
A contract implied-in-law, also known as a quasi-contract, is a legally binding contract that neither party intended to create. It is imposed by law to enforce fairness and justice, and prevent unjust enrichment, which occurs when one party benefits at the expense of another. For example, if a doctor provides emergency treatment to an unconscious patient, a contract implied-in-law is created, as the doctor is entitled to compensation for their services, even without the patient's explicit consent.
| Characteristics | Values |
|---|---|
| Type of contract | Constructive contract, quasi-contract, or implied-in-law contract |
| Legality | Legally binding |
| Formation | Formed by conduct rather than words; inferred from actions, facts, or circumstances |
| Intent | No intention to enter into an agreement |
| Purpose | To enforce fairness and justice; to prevent unjust enrichment |
| Enforcement | Difficult to enforce due to lack of written terms |
| Examples | A customer receives services from a merchant and is expected to pay; a doctor provides emergency treatment to an unconscious patient |
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What You'll Learn
- Implied-in-law contracts are imposed by law to enforce fairness and justice
- They are legally binding without the intention to create a contract
- They are based on circumstances rather than the behaviour of involved parties
- They are used to prevent unjust enrichment, where one benefits at another's expense
- They are legally enforceable promises of mutual assent to be bound

Implied-in-law contracts are imposed by law to enforce fairness and justice
An implied contract is a legally binding obligation that is inferred from the actions, conduct, or circumstances of the parties involved in an agreement, rather than being explicitly stated in words. It is important to distinguish between implied-in-fact contracts and implied-in-law contracts.
Implied-in-fact contracts are formed when parties' actions and conduct suggest a mutual agreement or understanding of the terms of the agreement and the actions that must be taken. For example, if a customer orders food at a restaurant, an implied contract is created: the restaurant owner must serve the food, and the customer must pay for it. In this case, both parties understand the terms of the agreement and what is expected of them.
On the other hand, implied-in-law contracts, also known as quasi-contracts, are imposed by law to enforce fairness and justice. They are not formed by the intent of the parties but by the need to ensure that one party is not unjustly enriched at the expense of the other. This type of contract is recognised by courts when one party has conferred a benefit on another without gratuitous intent, and the receiving party has the opportunity to decline but accepts it anyway. For example, a doctor providing emergency medical services to an unconscious patient has a legal right to payment, even though the patient did not agree to the services. The implied-in-law contract prevents the patient from being unjustly enriched by receiving free medical care.
It is important to note that implied contracts can be challenging to enforce due to the lack of a written or verbal agreement. Courts may review the relationship between the parties, previous agreements, and duties performed to determine the existence of an implied contract. While implied contracts may be more difficult to prove, they are legally enforceable, and disputes can be supported by gathering evidence such as payment records, emails, texts, and witness statements.
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They are legally binding without the intention to create a contract
An implied-in-law contract, also known as a quasi-contract, is a legally binding obligation that is imposed by law in the absence of any mutual agreement between the parties involved. It is designed to enforce fairness and justice and prevent unjust enrichment, which occurs when one party benefits at the expense of another without providing just compensation.
Implied-in-law contracts are based primarily on a set of circumstances rather than the behaviour of the involved parties. They are legally binding without the intention to create a contract, as they are not formed by mutual assent or a meeting of the minds. Instead, they arise from the need to compensate one party for providing a benefit or service to another.
For example, consider a scenario where a person receives emergency medical services while unconscious. The patient didn't agree to the services, but they are legally obligated to pay to prevent the unjust enrichment of receiving free medical care. In this case, an implied-in-law contract is created, as the law imposes an obligation for the patient to compensate the medical provider, regardless of the absence of a mutual agreement.
Another example could be a mechanic who helps a stranded driver on the road and then sends an invoice later. Even without a verbal or written agreement, the court may recognise an implied-in-law contract between the mechanic and the driver based on the principle of fairness, as the mechanic provided a service that deserves just compensation.
It is important to note that implied-in-law contracts are distinct from implied-in-fact contracts, which are formed through the conduct of the parties that suggest a mutual intention to contract. While implied-in-law contracts focus on fairness and preventing unjust enrichment, implied-in-fact contracts are based on the understanding that both parties expect something in return, such as paying for a haircut without a verbal agreement.
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They are based on circumstances rather than the behaviour of involved parties
An implied-in-law contract, also known as a quasi-contract, is a legally binding contract that neither party intended to create. It is based on circumstances rather than the behaviour of the involved parties. This type of contract is imposed by law in the absence of a mutual agreement to enforce fairness and justice. It is designed to prevent unjust enrichment, a concept where one party benefits at the expense of another.
Implied-in-law contracts are generally recognised in situations where one party might otherwise be unjustly enriched at the expense of another. For example, a person receives emergency medical services while unconscious. The patient didn't agree to the services but is legally obligated to pay, preventing the unjust enrichment of receiving free medical care. In this case, a court will typically recognise an implied-in-law contract to exist because the basic principle of fairness decrees that the doctor should receive just compensation for the professional services provided.
Another example of an implied-in-law contract is when a mechanic helps a stranded driver on the side of the road and then sends an invoice later. The driver didn't explicitly request the mechanic's help, but the mechanic is entitled to send an invoice for their services, and the driver is obligated to pay. This is because the mechanic provided a service that benefited the driver, and it would be inequitable for the driver to accept the benefit without compensating the mechanic.
Courts will often review the relationship between the parties, whether previous agreements were established, and duties performed when determining the existence of an implied-in-law contract. Disputes over implied contracts can be challenging and complex due to the lack of a written or verbal agreement. However, evidence such as payment records, emails, texts, witness statements, and other documentation can help support the existence of an implied contract.
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They are used to prevent unjust enrichment, where one benefits at another's expense
A contract implied-in-law, also known as a quasi-contract, is not a contract in the traditional sense, but rather a legal fiction imposed by courts to prevent unjust enrichment. It is a type of implied contract that arises not from the explicit agreement between the parties but from the circumstances of their relationship and the principles of equity and fairness. The key principle underlying contracts implied-in-law is preventing unjust enrichment, where one party benefits at the expense of another without just compensation. In such cases, the law implies a contract to ensure that the benefiting party does not unfairly profit and that the disadvantaged party receives appropriate recompense.
Quasi-contracts, or contracts implied-in-law, are created by courts to provide a legal remedy in situations where there is no actual agreement between the parties but where allowing one party to benefit without paying would be unjust. This type of implied contract is based on the principles of equity and fairness, rather than the express promise or agreement typically found in express or implied-in-fact contracts. The focus is on the conduct of the parties and the circumstances surrounding their dealings, with the court stepping in to impose a contractual obligation where necessary to prevent unjust enrichment.
Unjust enrichment occurs when one person gains a benefit at the expense of another in circumstances that the law considers unjust. This typically involves one party receiving a benefit, such as goods, services, or money, from another without providing adequate compensation in return. Contracts implied-in-law are used to address such situations by requiring the benefiting party to compensate the disadvantaged party, thereby preventing them from being unjustly enriched at the other's expense. This ensures fairness and equitable treatment between the parties, even in the absence of an express agreement.
For example, imagine a scenario where a freelance graphic designer creates a logo for a client, and the client uses the logo but refuses to pay the designer's fee, arguing that there was no contract or agreement to pay. In this case, a court might imply a contract-in-law to prevent the client from being unjustly enriched by the designer's work. The court could order the client to pay the designer the reasonable value of their services, ensuring that the client does not benefit from the designer's work without providing just compensation.
Contracts implied-in-law are distinct from express contracts, where the terms are explicitly stated and agreed upon by the parties, and implied-in-fact contracts, where the terms are implied based on the conduct and actions of the parties. Instead, they are imposed by the court or tribunal as a matter of law to provide a remedy in situations where there is no actual agreement but fairness and justice require compensation. This power of the courts to imply contracts in certain situations helps maintain a balance between the interests of the parties and ensures that equitable solutions are reached, even in the absence of express agreements.
In summary, contracts implied-in-law serve as a legal tool to promote fairness and prevent unjust enrichment. They are imposed by courts to provide a remedy when one party benefits at the expense of another without just compensation. By requiring the benefiting party to pay for the value they have received, contracts implied-in-law ensure that fairness prevails and that no one unfairly profits from another's loss or labor.
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They are legally enforceable promises of mutual assent to be bound
A contract implied-in-law, also known as a quasi-contract or an implied-in-law contract, is not a contract in the traditional sense, where two parties mutually agree with an exchange of promises or value. Instead, it is a legal fiction created by courts to impose a contractual obligation on someone, even without their consent, to prevent unjust enrichment. The key concept here is "legally enforceable promises of mutual assent to be bound."
In the context of contracts implied-in-law, the promise or assent to be bound by a contractual obligation is not explicitly expressed or verbally agreed upon by the parties involved. Instead, it is implied by the law based on the facts and circumstances of the case. The law implies a promise or assent on behalf of one or both parties to create fairness and prevent unjust enrichment.
For example, imagine a situation where a plumber performs emergency repairs on a burst pipe in someone's home. Even if the homeowner did not explicitly request the service or agree to a price beforehand, the law may imply a contract, creating a legally enforceable promise to pay for the plumber's services. This implied-in-law contract is based on the understanding that the plumber intended to be paid for their work and that the homeowner assented to this obligation by allowing the plumber to perform the necessary repairs.
Another scenario could involve an artist who creates a commissioned painting for a client. If the client backs out of the deal after the artist has already started or completed the work, the law may imply a contract, making the client liable to pay for the artist's services, even without a written agreement. The client's request for the artist's work and the artist's subsequent performance imply a mutual understanding and assent to be bound by a contractual obligation.
In both cases, the contracts implied-in-law are enforced to promote fairness and prevent unjust enrichment. They ensure that individuals or businesses providing goods or services receive fair compensation and that those benefiting from such goods or services fulfill their obligation to pay. This legal construct helps maintain equity and deter people from unfairly benefiting at another's expense.
It's important to note that contracts implied-in-law are distinct from contracts implied-in-fact, where an agreement is inferred from the parties' conduct or circumstances, indicating mutual assent. In contrast, contracts implied-in-law are imposed by the law to achieve justice, regardless of the parties' intentions or conduct.
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Frequently asked questions
A contract implied-in-law, also known as a quasi-contract, is a legally binding obligation created by law in the name of justice and to avoid unjust enrichment.
An express contract is communicated orally or in writing, and requires explicit agreement. A contract implied-in-law, on the other hand, is inferred from actions, facts, or circumstances, and does not require mutual agreement.
A contract implied-in-fact is formed through the conduct of the parties, suggesting a mutual intention to contract. A contract implied-in-law, however, is imposed by law to enforce fairness and justice, and does not require mutual agreement.
A doctor provides emergency treatment to an unconscious neighbor who did not request the services and had no intention of paying. The patient is legally obligated to pay, preventing unjust enrichment. Another example is where a mechanic helps a stranded driver and sends an invoice later.








































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