Full and Open Acquisition, in practice

FAR clauses/Part 42/Checked 15 Sep 2026

FAR 52.242-15
Stop-Work Order

Clause date
AUG 1989
Prescribed at
FAR 42.1305(b). The CO may, when contracting by negotiation, insert the clause in solicitations and contracts for supplies, services, or research and development; use Alternate I if a cost-reimbursement contract is contemplated.
Applies to
Negotiated supply, service, and R&D contracts (Alternate I for cost-reimbursement).
Flowdown
No flowdown required
52.242-15 contains no subcontract flowdown paragraph. It is not listed in 52.244-6(c)(1) or 52.212-5(e)(1).
Full text
FAR 52.242-15 on Acquisition.gov

… (a) The Contracting Officer may, at any time, by written order to the Contractor, require the Contractor to stop all, or any part, of the work called for by this contract for a period of 90 days after the order is delivered to the Contractor, and for any further period to which the parties may agree. The order shall be specifically identified as a stop-work order issued under this clause. …

From the clause · Codified FAR · FAC 2026-01

Why it matters: If the stop-work period ends without cancellation or termination, the contractor must resume work, and its right to an equitable adjustment depends on asserting it within 30 days after the stoppage ends (unless the CO accepts it later).

This is the codified text, not any agency's Revolutionary FAR Overhaul deviation. An agency running a class deviation may have this clause renumbered, rewritten or prescribed differently — check the deviation before you put a clause in a solicitation.

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