29 C.F.R. § 22.25 Fees.
Title 29 - Labor
The party requesting a subpoena shall pay the cost of the fees and mileage of any witness subpoenaed in the amounts that would be payable to a witness in a proceeding in United States District Court. A check for witness fees and mileage shall accompany the subpoena when served, except that when a subpoena is issued on behalf of the authority, a check for witness fees and mileage need not accompany the subpoena.
Title 29: Labor
PART 22—PROGRAM FRAUD CIVIL REMEDIES ACT OF 1986
§ 22.25 Fees.