Meaning
Conduct-based legal doctrines validate unwritten contracts when the actions of one party demonstrate the existence of an enforceable obligation. The doctrine of part performance removes an oral agreement from statutory writing requirements when a party takes substantial, irreversible actions in reliance on the agreement. This doctrine governs disputes over unwritten equity grants and early executive compensation promises.
The boundary where this doctrine stops applying occurs when the performed acts are ambiguous or explainable by ordinary employment relationships.
Action Requirement
Establishing enforceability without written documentation requires actions unequivocally referable to the alleged agreement. Under part performance, a founder working without compensation while taking financial risk provides evidence of an equity agreement. The performance must be of a character that would not have occurred absent the promised contractual right.
Accepting nominal compensation while developing intellectual property constitutes typical conduct evaluated under this doctrine.
Reliance Proof
Unilateral reliance validates commitments when one party suffers significant detriment based on verbal assurances. Applying part performance protects individuals who surrendered competing career opportunities or invested personal capital into company operations.
Evidentiary Limitation
Reconstructing unwritten agreements through past conduct introduces substantial evidentiary hurdles during corporate litigation. Asserting part performance requires corroborating testimony and bank transfers to prove that actions directly resulted from the promised equity split. When performed acts can be attributed to ordinary salary negotiations, the doctrine fails to enforce the unwritten agreement.
Lacking unambiguous written documentation forces companies into protracted evidentiary disputes to resolve share ownership.