District of Columbia Code Division V. Local Business Affairs § 32-1051.03. Prohibited acts.

(A) Made, or is believed to have made, a complaint to the covered employer, the Mayor, the Attorney General for the District of Columbia, a federal employee, or District government employee that the covered employer has engaged in conduct that the covered employee, reasonably and in good faith, believes violates this subchapter or a regulation issued pursuant to this subchapter;

(B) Instituted, or will institute, a proceeding alleging a violation of this subchapter;

(C) Provided information related to a possible violation of this subchapter to the Mayor, the Attorney General for the District of Columbia, or a federal or District government employee;

(D) Testified, or will testify, in an investigation or proceeding being conducted pursuant to this subchapter; or

(E) Exercised any other right protected by this subchapter; or

(A) Admit the Mayor to a covered location;

(B) Make available any record required to be made or retained by this subchapter; or

(C) Post a summary or copy of this subchapter and of any applicable regulation, as required by 32-1051.04.