5 U.S.C. § 1306
Oaths to witnesses
The Director of the Office of Personnel Management and authorized representatives of the Director may administer oaths to witnesses in matters pending before the Office.
( Pub. L. 89–554 , Sept. 6, 1966 , 80 Stat. 402 ; Pub. L. 95–454, title IX, § 906(a)(13) , Oct. 13, 1978 , 92 Stat. 1226 .)