29 N.Y.2d 124, 272 N.E.2d 533, 324 N.Y.S.2d 22 (N.Y. 1971)
Austin Instrument v. Loral Corp.
Whether a contract modification extracted by a supplier's threat to cease performance—when the buyer has no feasible alternative source or remedy to meet urgent contractual deadlines—is voidable for economic duress.
A contract modification is voidable for economic duress when: (1) a wrongful or improper threat—such as a threat to breach an existing contract or withhold essential performance—is made; (2) the threat induces assent by leaving the victim with no reasonable alternative; and (3) the victim promptly repudiates the agreement once the duress has ceased. Mere hard bargaining is not duress; the coercion must be wrongful and must deprive the victim of the ability to exercise free will. Even under the UCC, where consideration is not required for modifications, a coerced modification lacking good faith is unenforceable.
Yes. Austin's threat to stop deliveries unless Loral agreed to price increases and awarded additional work constituted economic duress, leaving Loral with no reasonable alternative. The coerced modification was voidable, and Loral was entitled to recover or withhold the price increases extracted under duress.
Austin Instrument v. Loral Corp. is the leading New York authority on economic duress and a staple in Contracts courses. It crystallizes the elements of economic duress, clarifies that a threat to breach can be wrongful when used to force unrelated concessions, and underscores that "no reasonable alternative" includes time-sensitive commercial realities. The case also harmonizes common-law duress with UCC modification doctrine by stressing good faith and voluntariness. Students learn to evaluate whether alternatives like cover, injunction, or suit for damages are realistically available and to analyze prompt repudiation. Austin is frequently contrasted with cases like Alaska Packers and Kelsey-Hayes and is often tested through fact patterns involving midstream price increases and supply-chain squeeze tactics.