The Lawletter Vol 42 No 3
Brad Pettit, Senior Attorney, National Legal Research Group
"[A]n implied waiver of nonperformance under a contract will be established by a party's conduct inconsistent with the assertion of the right to the performance allegedly waived, or by conduct that indicates that strict compliance with the contract will not be required, provided that the conduct manifests the requisite intent to waive the right to performance or has induced the requisite reliance by the other party." 13 Williston on Contracts § 39:30 (4th ed.) (Westlaw current through May 2015 Update) (footnotes omitted). For example, a lessor who regularly accepts late payments may establish a course of performance or "an order of business," which operates to waive, as to future payments, a provision making time of the essence and to preclude that party from enforcing a forfeiture. Id. It is also a principle of contract law that "[u]nless otherwise agreed, a course of dealing between the parties gives meaning to or supplements or qualifies their agreement." Restatement (Second) of Contracts § 223 (1981) (Westlaw current through Oct. 2016 Update).
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