29 U.S.C. § 1856

Waiver of rights

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 .)