<Ul> <Li> Contract implied in fact . A person's assent to be bound by an agreement can be expressed or implied . In the latter case, assuming the requisite formalities for a valid contract are met, there is a perfectly normal contract . The only distinction between a contract arising by express agreement between two people and a contract implied - in - fact is that the latter was recognised by a court drawing inferences from facts proved at trial . When the plaintiff sued on either sort of contract, she was suing in the law of contract in respect of a consensually assumed obligation and her remedy for the defendant's breach was damages . </Li> <Li> Quasi-contract . In contrast, quasi-contract refers to situations in which a defendant is bound as if there were a contract . When the plaintiff sued on such a' contract' by bringing an action of indebitatus assumpsit, she was not enforcing some consensually assumed obligation, but rather an obligation imposed by law . </Li> </Ul> <Li> Contract implied in fact . A person's assent to be bound by an agreement can be expressed or implied . In the latter case, assuming the requisite formalities for a valid contract are met, there is a perfectly normal contract . The only distinction between a contract arising by express agreement between two people and a contract implied - in - fact is that the latter was recognised by a court drawing inferences from facts proved at trial . When the plaintiff sued on either sort of contract, she was suing in the law of contract in respect of a consensually assumed obligation and her remedy for the defendant's breach was damages . </Li> <Li> Quasi-contract . In contrast, quasi-contract refers to situations in which a defendant is bound as if there were a contract . When the plaintiff sued on such a' contract' by bringing an action of indebitatus assumpsit, she was not enforcing some consensually assumed obligation, but rather an obligation imposed by law . </Li>

Quasi contract is a legal theory under which an obligation is imposed in the absence of an agreement