A prior section 5341, Pub. L. 89–554, Sept. 6, 1966, 80 Stat. 471; Pub. L. 90–83, § 1(97), Sept. 11, 1967, 81 Stat. 220; Pub. L. 90–560, § 4, Oct. 12, 1968, 82 Stat. 997, provided prevailing rate system for trades and crafts and is covered by sections 5343(c), (d) and 5349(a) of this title.

Pub. L. 92–392, § 15(a), Aug. 19, 1972, 86 Stat. 575, provided that: “The provisions of this Act [enacting this subchapter and section 5550 of this title, amending sections 2105, 5337, 5541, 5544, 5548, 6101, 7154, and 8704 of this title, repealing section 6102 of this title, and enacting provisions set out as notes under sections 5341 and 5343 of this title and sections 4531 and 4571 of Title 2, The Congress] are effective on the first day of the first applicable pay period which begins on or after the ninetieth day after the date of enactment of this Act [Aug. 19, 1972], except that, in the case of those employees referred to in section 5342(a)(2)(B) and (C) of title 5, United States Code (as amended by the first section of this Act), such provisions are effective on the first day of the first applicable pay period which begins on or after the one hundred and eightieth day after such date of enactment or on such earlier date (not earlier than the ninetieth day after such date of enactment) as the Civil Service Commission may prescribe. Notwithstanding the provisions of this subsection, section 5343(e)(1)(D) and (E) and (e)(2)(C), as enacted by the first section of this Act, shall not be effective until the first day of the first pay period commencing after (1) the date on which the President ceases to exercise his authority under the Economic Stabilization Act of 1970 [formerly set out as a note under section 1904 of Title 12, Banks and Banking] to stabilize wages and salaries, or (2) April 30, 1973, whichever occurs first.”

Pub. L. 92–392, § 13, Aug. 19, 1972, 86 Stat. 575, provided that: