District of Columbia Code Division I. Government of District. § 1-615.53. Prohibitions.

(a) A supervisor shall not take, or threaten to take, a prohibited personnel action or otherwise retaliate against an employee because of the employee's protected disclosure or because of an employee's refusal to comply with an illegal order.

(b) Except in cases where the communication would be unlawful, a person shall not interfere with or deny the right of employees, individually or collectively, to furnish information to the Council, a Council committee, or a Councilmember.