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2023年1月13日

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    A quasi contract, also known as an implied-in-law contract, is a legal concept that is often used to describe a situation where two parties have not entered into a formal written contract, but they are still legally obligated to each other due to one party receiving benefits from the other party. Quasi contracts are usually enforced in situations where one party would be unjustly enriched if the other party is not compensated.

    Here are some examples of quasi contract cases:

    1. Medical emergency

    A person is rushed to the hospital after being involved in a car accident. Even though the hospital has not received a signed agreement from the patient to provide medical care, they are still required to provide care under quasi contract. This is because the patient has received a benefit, and if the hospital was not compensated, they would be unjustly enriched.

    2. Unjust enrichment

    An electrician is hired to fix the wiring in a house. The homeowner decides not to pay the electrician after the work is done because they think the work was not done correctly. The electrician can bring a quasi contract claim against the homeowner to claim payment for the work done, as they have benefited from the work done by the electrician and would be unjustly enriched if they did not pay.

    3. Mistake

    A person mistakenly pays an invoice twice. The vendor receives the payment and realizes that it was a mistake, but they do not return the extra payment. The person who made the mistake can bring a quasi contract claim against the vendor to claim the extra payment, as the vendor would be unjustly enriched if they kept the extra payment.

    4. Agreement not formalized

    A person hires a consultant to provide services, but they do not sign a formal contract. After the services are provided, the consultant invoices for payment, but the client refuses to pay. The consultant can bring a quasi contract claim to claim payment, as the client received services and would be unjustly enriched if they did not pay.

    In conclusion, quasi contracts are often enforced in situations where one party would be unjustly enriched if the other party is not compensated. Quasi contract cases can arise in various situations, such as medical emergencies, unjust enrichment, mistakes, and agreements that have not been formalized. As a legal concept, it is important to understand the implications of quasi contracts and how they can be used to enforce legal obligations.