52.216-23
Execution and Commencement of Work
Contractors must promptly sign and return three copies of the letter contract by the specified date to begin authorized work under a letter contract.
Overview
FAR 52.216-23, Execution and Commencement of Work, is a clause used in letter contracts (except those awarded on Standard Form 26) to formalize the contractor's acceptance and establish when work should begin. The clause requires the contractor to sign and return three copies of the letter contract to the Contracting Officer by a specified date. Once both parties have accepted the contract, the contractor is authorized to start work, including purchasing necessary materials. This clause ensures that both parties have a clear, documented agreement before performance begins, reducing the risk of misunderstandings or unauthorized work.