29 C.F.R. § 13.3 – Coverage.

(a) This part applies to any new contract with the Federal Government, unless excluded by § 13.4, provided that:
1. (1)
  1. (i) It is a procurement contract for construction covered by the Davis-Bacon Act;
  2. (ii) It is a contract for services covered by the Service Contract Act;
  3. (iii) It is a contract for concessions, including any concessions contract excluded from coverage under the Service Contract Act by Department of Labor regulations at § 4.133(b); or
  4. (iv) It is a contract in connection with Federal property or lands and related to offering services for Federal employees, their dependents, or the general public; and
2. (2) The wages of employees performing on or in connection with such contract are governed by the Davis-Bacon Act, the Service Contract Act, or the Fair Labor Standards Act, including employees who qualify for an exemption from the Fair Labor Standards Act's minimum wage and overtime provisions.
(b) For contracts covered by the Service Contract Act or the Davis-Bacon Act, this part applies to prime contracts only at the thresholds specified in those statutes. For procurement contracts where employees' wages are governed by the Fair Labor Standards Act, this part applies when the prime contract exceeds the micro-purchase threshold, as defined in 41 U.S.C. 1902(a). For all other prime contracts covered by Executive Order 13706 and this part and for all subcontracts awarded under prime contracts covered by Executive Order 13706 and this part, this part applies regardless of the value of the contract.
(c) This part only applies to contracts with the Federal Government requiring performance in whole or in part within the United States. If a contract with the Federal Government is to be performed in part within and in part outside the United States and is otherwise covered by the Executive Order and this part, the requirements of the Order and this part would apply with respect to that part of the contract that is performed within the United States.
(d) This part does not apply to contracts for the manufacturing or furnishing of materials, supplies, articles, or equipment to the Federal Government, including those that are subject to the Walsh-Healey Public Contracts Act, 41 U.S.C. 6501 et seq.