A no oral modification clause says contract changes must be made in writing rather than by oral agreement.
Why a no oral modification clause matters
A no oral modification clause matters because parties often disagree about whether they later changed a written contract. The clause tries to require written amendments so that changes are easier to prove and less vulnerable to conflicting memory.
Depending on the law and facts, later conduct or waiver arguments may still create disputes.
Where a no oral modification clause appears
No oral modification clauses appear in commercial contracts, leases, employment agreements, service contracts, purchase agreements, settlement agreements, and software agreements.
Practical example
A services contract says all changes must be in a signed writing. Later, one party claims a phone call changed the payment deadline. The clause may become central to whether that alleged change is enforceable.
How a no oral modification clause differs from nearby terms
A no oral modification clause differs from an integration clause because an integration clause addresses prior or outside terms at formation, while no oral modification language addresses later changes. It differs from a waiver because waiver may involve giving up enforcement of a known right.
Related terms
Quick knowledge check
Why do parties include no oral modification clauses in written agreements?