29 U.S.C. § 1856 : Labor — Migrant And Seasonal Agricultural Worker Protection — General Provisions — Enforcement Provisions — Waiver Of Rights Date: 6 Feb 2017 TEXT PDF Agreements by employees purporting to waive or to modify their rights under this chapter shall be void as contrary to public policy, except that a waiver or modification of rights in favor of the Secretary shall be valid for purposes of enforcement of this chapter. (Pub. L. 97–470, title V, § 506, Jan. 14, 1983, 96 Stat. 2598.)