48 CFR § 22.305 - Contract clause.
Insert the clause at 52.222-4, Contract Work Hours and Safety Standards - Overtime Compensation, in solicitations and contracts (including, for this purpose, basic ordering agreements) when the contract may require or involve the employment of laborers or mechanics. However, do not include the clause in solicitations and contracts -
(a) Valued at or below $150,000;
(b) For commercial items;
(c) For transportation or the transmission of intelligence;
(d) To be performed outside the United States, Puerto Rico, American Samoa, Guam, the U.S. Virgin Islands, Johnston Island, Wake Island, and the outer Continental Shelf as defined in the Outer Continental Shelf Lands Act (43 U.S.C. 1331) (29 CFR 5.15);
(e) For work to be done solely in accordance with 41 U.S.C. chapter 65(see subpart 22.6);
(f) For supplies that include incidental services that do not require substantial employment of laborers or mechanics; or
(g) Exempt under regulations of the Secretary of Labor (29 CFR 5.15).