Also known as:quasi contractual relationship · quasi-contractual relationships · quasi-contract · quasi contract
Written by attorneys · grounded in primary & secondary sources — see below
An equitable doctrine that imposes restitutionary obligations on a party who has received a benefit from another's performance or reliance when no enforceable contract exists, to prevent unjust enrichment.
Sources & Authorities
How it applies
Common Examples
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Breach of Promise Recovery
Quentin Quinn and Quiana Quach became engaged after two years of collaboration. Quiana quit her job and invested savings in Quentin's startup based on his repeated assurances that the contributions prepared them for marriage and shared ownership. When Quentin called off the wedding after a funding round, Quiana sued. The court recognized a quasi-contractual relationship and awarded restitution for her actual expenditures and lost wages to prevent unjust enrichment from the retained benefits.
Athlete Scholarship Claim
Quest Quail received a football scholarship from Tennessee Football Inc. and performed under team rules while the school treated the arrangement as non-contractual. After an injury, Quest asserted a quasi-contractual relationship to recover benefits the school had accepted through his participation. The court examined whether duties arose independently of any formal agreement and whether restitution could address the enrichment retained by the program.
Put it into practice
Test Yourself
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Practice Questions5
· 1 primary source
Select any source to read its text and confirm it supports the definition.
When does a quasi-contractual relationship support restitution instead of contract damages?+
A quasi-contractual relationship supports restitution when parties never formed an enforceable contract yet one conferred a measurable benefit that the other retained. Courts measure recovery by the value of the unjust enrichment rather than any lost expectation. This applies after avoidance for mistake or when negotiations fail after performance begins.
Supporting sources
How does breach of promise to marry illustrate a quasi-contractual relationship?+
In states that retain the action, breach of promise to marry operates as a quasi-tort, quasi-contract claim. Recovery covers actual expenditures made in preparation for marriage and certain personal harms but excludes loss of expected financial position. The quasi-contract element prevents unjust enrichment from reliance investments when the marriage does not occur.
Supporting sources
Can a quasi-contractual relationship arise in employment or scholarship settings?+
Yes. Courts may recognize a quasi-contractual relationship between an athlete and school when scholarship terms create performance obligations without forming a traditional employment contract. The doctrine allows recovery for benefits conferred and retained when formal contract claims are unavailable.
Supporting sources
ContractsFormation of contracts · Indefiniteness and absence of termsUBEIntermediate