D.C. Mun. Regs. tit. 1, § 2817
2817
VOLUNTARY DISMISSALS OF CASES
2817.1 The party initiating the case may move to dismiss the case at any time, and the Administrative Law Judge may grant the motion without waiting for a response from the opposing side.
2817.2 An opposing party who objects to the voluntary dismissal of a case may file a motion for reconsideration as provided in Subsection 2828.
2817.3 The parties may file a joint motion for dismissal of a case with or without prejudice.
2817.4 Dismissal under this Section shall be without prejudice, unless an Administrative Law Judge orders otherwise. A dismissal with prejudice may occur:
(a) If the party requesting dismissal has previously dismissed the claim;
(b) If the motion for dismissal is made pursuant to a settlement that does not specifically require dismissal without prejudice; or
(c) In order to prevent harm to the other side.
SOURCE: Final Rulemaking published at 51 DCR 6399 (June 25, 2004); as amended by Notice of Final Rulemaking published at 57 DCR 12541, 12554 (December 31, 2010).