Code of Federal Regulations Title 48. Federal Acquisition Regulations System 48.3.402 Statutory requirements

(a) Require in every negotiated contract a warranty by the contractor against contingent fees;

(b) Permit, as an exception to the warranty, contingent fee arrangements between contractors and bona fide employees or bona fide agencies;  and

(c) Provide that, for breach or violation of the warranty by the contractor, the Government may annul the contract without liability or deduct from the contract price or consideration, or otherwise recover, the full amount of the contingent fee.