D.C. Mun. Regs. tit. 18, r. 18-1025
Any party to a proceeding may appear and be heard in person or through an attorney.
No register of persons who may practice before the Department is maintained and no application for admission to practice is required.
Any attorney practicing before the Department may, upon hearing and good cause shown, be suspended or barred from so practicing.
Any party appearing in person in any proceeding governed by this chapter, whether in response to a subpoena or by request or permission of the Department, may be accompanied, represented, and advised by counsel and may be examined by his or her own counsel before and after other questioning.
An attorney appearing as counsel shall enter a written appearance on a form provided by the Department which shall contain the signature, address, telephone number, person he or she represents, and a certification that he or she has been admitted to and is authorized to practice before the District of Columbia Court of Appeals.
If an attorney is admitted only in another jurisdiction, the examiner may allow appearance by counsel upon satisfactory proof that such counsel is admitted to and is in good standing with the highest court of that jurisdiction at the time of the hearing.
A respondent may be assisted by a non-attorney at the discretion of the hearing examiner.
A non-attorney designated agent may appear in place of a respondent at the discretion of the hearing examiner.
A respondent shall submit a notarized affidavit, provided by the Director, that the respondent authorized the non-attorney designated agent to appear in his or her place. The sworn affidavit shall be valid for one (1) year or for a lesser period if stated on the affidavit.
D.C. Mun. Regs. tit. 18, r. 18-1025