D.C. Mun. Regs. tit. 8-A, § 2007
2007.1 The existence of a valid, ratified agreement between the Board of Governors and a labor organization shall bar the filing of a petition for recognition during the term of the agreement, except as provided otherwise in §2007.3.
2007.2 The existence of a valid, ratified agreement between the Board of Governors and a labor organization shall bar the filing of a petition for decertification during the term of the agreement, except as provided otherwise in §2007.3.
2007.3 A petition for recognition or decertification may be filed not less than sixty (60) days nor more than ninety (90) days prior to the expiration date of an existing agreement of a term of three (3) years or less, or not less than sixty (60) days nor more than ninety (90) days prior to the third anniversary date of an agreement of a term of more than three (3) years.
2007.4 No unit shall be established that includes any of the following:
(a) Any administrator or member of the Board of Governors;
(b) Any supervisor together with employees under that supervisor's supervision;
(c) Any employee who assists or has a confidential relationship with any administrator or management official who has a functional responsibility for or official knowledge of labor relations matters as part of that person's duties with the School of Law;
(d) Any employee whose duties or employment is of a temporary or casual nature; or
(e) Both professional and nonprofessional employees, unless a majority of the professional employees vote or petition for inclusion in the unit.
SOURCE: Final Rulemaking published at 36 DCR 1487 (February 24, 1989).