D.C. Mun. Regs. tit. 7 § 220
An original application for formal hearing shall be in writing, signed by the moving party, and filed with the Hearings and Adjudication Section. A copy of the application shall also be filed with the Office of Workers' Compensation, and served on all opposing parties, or their representatives, if known.
Upon receipt of an application for formal hearing, the formal hearing shall be scheduled no later than ninety (90) days from the date of application for formal hearing except, where for good cause shown an extension may be granted by the Hearing Examiner for a reasonable period of time.
Upon receipt of an application for formal hearing, the Hearing and Adjudication Section shall issue a Scheduling Order. The Scheduling Order shall be issued within ten (10) workings days of receipt of the application for formal hearing.
Notice of formal hearing shall be served upon all interested parties or their representatives at least ten (10) working days before the hearing.
D.C. Mun. Regs. Tit. 7, § 220