The recent decision in STI Oilfield Services v. The Williams Companies, Inc. f/k/a Access Midstream Partners, No. 2018-1003 C.P. (Pa. Com. Pl., Susquehanna County, March 16, 2020 Opinion), highlights the challenges those in the construction industry face when contractors or subcontractors seek additional compensation based upon an alleged oral change order or modification, even when the underlying contract contains a clear “no oral modification” (NOM) clause.

Most construction contracts contain one or more NOM clauses, including a requirement that valid change orders be in writing. Generally, these clauses provide that a contract cannot be modified absent a writing executed by the parties. This is intended to avoid having the carefully drafted written agreement of the parties set aside based on alleged oral conversations that are often supported only by memory or by piecing together evidence of conduct of the parties. Oral modifications naturally breed disagreements, misunderstandings and protracted litigation—everything a well-written contract seeks to avoid. However, Pennsylvania courts have not strictly enforced NOM clauses, especially with respect to construction contracts and alleged oral change orders for extra work.