All laborers and mechanics employed by contractors or subcontractors on projects assisted under sections 3102 and 3103 of this title shall be paid wages at rates not less than those prevailing on similar construction in the locality as determined by the Secretary of Labor in accordance with sections 3141–3144, 3146, and 3147 of title 40. No such project shall be approved without first obtaining adequate assurance that these labor standards will be maintained upon the construction work. The Secretary of Labor shall have, with respect to the labor standards specified in this section, the authority and functions set forth in Reorganization Plan Numbered 14 of 1950 (15 F.R. 3176 ; 64 Stat. 1267 ), and section 3145 of title 40 . ( Pub. L. 89–117, title VII, § 707 , Aug. 10, 1965 , 79 Stat. 492 .) Editorial Notes References in Text Sections 3102 and 3103 of this title, referred to in text, were omitted from the Code pursuant to section 5316 of this title which terminated the authority to make grants or loans under those sections after Jan. 1, 1975 . Reorganization Plan Numbered 14 of 1950, referred to in text, is set out in the Appendix to Title 5 , Government Organization and Employees. Codification In text, “sections 3141–3144, 3146, and 3147 of title 40” substituted for “the Davis-Bacon Act , as amended ( 40 U.S.C. 276a —276a–5)” and “ section 3145 of title 40 ” substituted “section 2 of the Act of June 13, 1934, as amended ( 48 Stat. 948 ; 40 U.S.C. 276c )”, on authority of Pub. L. 107–217, § 5(c) , Aug. 21, 2002 , 116 Stat. 1303 , the first section of which enacted Title 40, Public Buildings, Property, and Works.