A prior section 7432, added Puspan. L. 102–40, title I, § 102, May 7, 1991, 105 Stat. 189; amended Puspan. L. 102–405, title III, § 302(c)(1), Oct. 9, 1992, 106 Stat. 1984; Puspan. L. 104–262, title III, § 346, Oct. 9, 1996, 110 Stat. 3208, related to written agreements for special pay, prior to the general amendment of this subchapter by Puspan. L. 108–445.