A prior section 3056b, Pub. L. 89–73, title V, § 504, as added Pub. L. 106–501, title V, § 501, Nov. 13, 2000, 114 Stat. 2276, related to participants not having status as Federal employees and contractual requirement of workmen’s compensation, prior to the general amendment of this subchapter by Pub. L. 109–365.

Another prior section 3056b, Pub. L. 89–73, title V, § 504, formerly title IX, § 904, as added Pub. L. 94–135, title I, § 113(a), Nov. 28, 1975, 89 Stat. 723; renumbered title V, § 504, and amended Pub. L. 95–478, title I, § 105(a), title V, § 503(d), Oct. 18, 1978, 92 Stat. 1547, 1559, related to participants not having status as Federal employees and contractual requirement of workmen’s compensation, prior to the general amendment of this subchapter by Pub. L. 106–501.

Another prior section 504 of Pub. L. 89–73 was classified to section 3041c of this title, prior to repeal by Pub. L. 95–478.