What is the primary purpose of a quantum meruit claim?

A quantum meruit claim is primarily concerned with ensuring that a party receives payment for services rendered when no specific contract exists, or when a contract exists but is unenforceable for some reason. The term "quantum meruit" translates to "as much as he has deserved," which signifies that a person is entitled to be compensated for the value of services they have provided, even if no formal agreement stipulates that payment should occur.

This legal principle seeks to achieve fairness and prevent unjust enrichment. For example, if a contractor performs work under an assumption of a contract that later falls through or is deemed invalid, quantum meruit allows the contractor to claim compensation based on the reasonable value of the work performed.

In contrast, the other options do not align with the aim of a quantum meruit claim. Modifying an existing contract, enforcing a legally binding agreement, or nullifying a contract relate to different legal issues surrounding contract law rather than addressing the situation where services were provided without clear contractual compensation. Thus, the focus of a quantum meruit claim is specifically on the principle of compensation for work done, which underlies its primary purpose.