Unjust Enrichment
A legal doctrine requiring a party who has received a benefit at another's expense, without a legal justification, to return that benefit or pay its value.
While straightforward in theory, many businesses fail to actively track obligations tied to this concept - often resulting in missed deadlines, unintended renewals, penalties, or loss of contractual rights.
US Law · For business owners and foundersWhat is a Unjust Enrichment?
Unjust enrichment is an equitable doctrine that prevents a party from retaining a benefit at another's expense when it would be inequitable to do so. When someone receives value - money, services, property - under circumstances where no valid contract exists (or where the contract is unenforceable), the law may impose a quasi-contractual obligation to pay for that value.
To establish unjust enrichment, the plaintiff must show: (1) the defendant received a benefit; (2) the benefit was conferred by the plaintiff, at the plaintiff's expense; and (3) it would be unjust or inequitable for the defendant to retain the benefit without compensating the plaintiff.
Quantum meruit ("as much as deserved") is the remedy in unjust enrichment cases involving services. Rather than enforcing a contract, courts award the reasonable value of services actually rendered. This is available when services were performed under an unenforceable contract, or when no contract existed but performance was reasonably expected to be compensated.
In practice, many teams rely on a contract expiry tracking system to stay on top of dates and obligations tied to clauses like this.
Key Elements
Benefit Received
The defendant must have received an actual benefit - money, goods, services, information, or other value that enriched them.At Plaintiff's Expense
The benefit must have come at a cost to the plaintiff - they must have provided something of value or suffered a detriment.No Legal Justification
There must be no legal basis (like a valid contract, gift, or legal obligation) justifying the defendant's retention of the benefit.Inequitable Retention
Retention of the benefit without compensation must be inequitable or unjust under the circumstances - courts look at the parties' reasonable expectations.Real-World Example
A contractor performs $50,000 worth of renovations on a property based on an oral contract that turns out to be unenforceable under the Statute of Frauds (because it's a contract for work lasting more than one year that wasn't in writing). The property owner benefits from the renovations but refuses to pay.
Even though the oral contract is unenforceable, the contractor can recover under unjust enrichment / quantum meruit. The property owner received a benefit ($50,000 in renovations) at the contractor's expense. Permitting retention without payment would be unjust. The contractor can recover the reasonable value of the services rendered.
This is why many businesses adopt automated deadline tracking to ensure no critical dates are missed before they pass.
Sample Clause Language
Exclusive Remedy Clause (Limiting Unjust Enrichment Claims)Watch Out For
Unjust Enrichment vs. Breach of Contract
If a valid contract governs the dispute, most courts will not allow an unjust enrichment claim for the same subject matter. Unjust enrichment is typically a fallback when no enforceable contract exists.Volunteer Doctrine
Courts typically deny unjust enrichment claims by "volunteers" - parties who conferred benefits without any reasonable expectation of compensation (e.g., doing unsolicited work for a neighbor).Measure of Recovery
Recovery in unjust enrichment is the value of the benefit to the defendant, not the plaintiff's cost of performance. These can differ significantly - especially in services contracts.Don't let unjust enrichment deadlines catch you off guard
Key dates tied to unjust enrichments - renewal windows, expiry cutoffs, notice periods - can easily slip through the cracks when tracked manually. Missing them triggers automatic extensions, penalties, or lost rights. ExpiryEdge tracks every critical deadline and sends automated reminders before they're due - so nothing slips.
Instead of relying on spreadsheets or manual follow-ups, a centralized renewal reminder system ensures every deadline is visible, tracked, and actioned automatically.
How to Use This in Your Favor
Always Get Contracts in Writing
Unjust enrichment claims arise most often when parties fail to reduce their agreement to a written contract. Written contracts with clear scope and compensation terms eliminate most unjust enrichment risk.Plead Unjust Enrichment Alternatively
In litigation, plead unjust enrichment as an alternative claim alongside breach of contract - courts allow alternative pleading at the outset, even if you ultimately recover only on one theory.Related Terms
Frequently Asked Questions
Can I bring an unjust enrichment claim if I have a written contract?
Generally not for the same subject matter - the existence of an enforceable contract typically bars an unjust enrichment claim. However, you can plead it as an alternative at the outset of litigation in case the contract is found unenforceable.
What is the statute of limitations for unjust enrichment?
It varies by state - typically 3 to 6 years. The clock usually starts running when the defendant received the benefit, not when the plaintiff discovers the claim.
Is unjust enrichment available between businesses?
Yes. Unjust enrichment applies in commercial contexts just as in consumer contexts. It is especially common in disputes where a party performed work under an unenforceable agreement.