D.C. Mun. Regs. tit. 5, r. 5-E607
The existence of a valid, ratified agreement between the Board and a labor organization shall bar the filing of a petition for recognition during the term of the agreement, except as provided in § 607.3.
The existence of a valid, ratified agreement between the Board and a labor organization shall bar the filing of a petition for decertification during the term of the agreement, except as provided by § 607.3.
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 that ninety (90) days prior to the third anniversary date of an agreement of a term of more than three (3) years.
Petitions for recognition or decertification that are filed in violation of the provisions of §§ 607.1 through 607.3 shall be dismissed by the Superintendent of Schools.
Upon receipt of a petition for recognition which meets the requirements of §§ 606.1 and 607.3, the Superintendent of Schools shall give notice in writing of the petition, and a description of the proposed bargaining unit, to all labor organizations known to have members who are employees in the affected unit or known to be seeking recognition in the unit.
The notice of petition for recognition shall indicate that the labor organizations notified shall have ten (10) days from the date of the notice to submit any comment on the proposed unit to the Superintendent.
The notice to a labor organization of a petition for recognition shall also advise the organization that if the organization wishes to represent employees in the same unit, the organization shall submit to the Board of Labor Relations evidence that at least ten percent (10%) of the employees in the unit are members of the organization; or, if the notified labor organization wishes to establish a unit that differs in part from the proposed unit in the petition, the organization shall submit evidence of a show of interest of at least thirty percent (30%) of the employees in its proposed unit.
Submission of evidence as required by § 607.7 shall be accomplished within ten(10) days of the receipt of notice.
On the same date on which notice is sent pursuant to the provisions of § 607.5 and § 607.6 of this section, notice of the proposed unit shall be posted on appropriate bulletin boards in offices that would be affected by the proposed unit. This notice shall also contain information about the ten (10) day period during which labor organizations may submit comments or specific unit proposals to the Superintendent of Schools.
The Superintendent shall determine the appropriateness of a bargaining unit based upon the information contained in the relevant petition, comments received on the petition, and on a consideration of other relevant factors, including the following:
No unit shall be established that includes any of the following:
D.C. Mun. Regs. tit. 5, r. 5-E607