Performance Work Statement (PWS)

Definition

A Performance Work Statement (PWS) is a document that describes required outcomes and measurable performance standards for a contract, leaving the contractor discretion over how the work is performed. PWSs are the preferred form for performance-based acquisition (FAR 37.6), in contrast with SOWs that specify methods. A PWS is paired with a Quality Assurance Surveillance Plan (QASP) that defines how the government will monitor compliance with performance standards.

Why It Matters

Performance-based contracting under PWSs lets contractors innovate on method while being held to outcomes. For contractors, this is double-edged: it rewards technical efficiency but leaves the risk of achieving outcomes. Proposal-management discipline matters, because teams must interpret PWS outcomes and QASP metrics precisely, because those become the basis for CPARS and any dispute over performance.

Example

A PWS requires '99.5% uptime for the help-desk system.' The contractor proposes an approach using commercial cloud services and achieves 99.8% actual uptime, well above the standard. The QASP documents compliance and CPARS reflects 'Exceptional' for quality.

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