unjust enrichment in contract law

Unjust enrichment occurs when one party benefits at another’s expense in a way that’s unfair, without a legal reason. In contract law, if someone receives a benefit (like payment or services) and it would be unjust for them to keep it without compensating the other party, the law may require restitution. This remedy aims to restore the original situation, ensuring that no one is unfairly enriched at another’s expense when there’s no valid contract or valid basis for keeping the benefit.