The Dubious Enforceability of ‘Only Can Be Modified by a Written Instrument’ Clauses
How many times over the years have you seen a clause in a contract stating that it only can be modified by a written instrument signed by the parties? Depending upon how long you have been practicing, the answer may well be hundreds, if not thousands. The problem with such a clause, however, is that it may not be as binding as it appears. Indeed, in a recent decision by Judge Saris in the Federal District Court, she ruled that a series of contracts prohibiting oral modifications or modification by conduct were, in fact, modified by words and acts.
In May of 2019, Sasha Hoffman began working for Thras.io Inc. pursuant to a written “Consulting Agreement” covering the period May 1 through July 31, and the parties subsequently entered into three additional Consulting Agreements that extended the term of her work through October. Each Consulting Agreement contained the following clause:
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No provision of this Consulting Agreement may be modified, amended, waived or terminated except by a prior instrument in writing signed by the parties to this Consulting Agreement. No course of dealing between the parties will modify, amend, waive or terminate any provision of this Consulting Agreement