D.C. Mun. Regs. tit. 27, § 2421
2421.1 When materials are not required, the contracting officer may use a labor-hour contract, a variation of the time-and-materials contract.
2421.2 The use of a labor-hour contract shall be in accordance with the provisions of §2420.
SOURCE: Final Rulemaking published at 35 DCR 1567 (February 26, 1988).