D.C. Mun. Regs. tit. 6, r. 6-B2903
Whenever an employee or former employee is indebted to the government for other than an erroneous payment, and the debt has either been acknowledged by the employee or former employee in writing or reduced to judgment, the Director of Pay and Retirement, Office of Financial Management, or his or her designee, after thirty (30) days' written notice to the employee or former employee, may collect the amount of the indebtedness as provided in § 2904.
Pursuant to Sec. 2(c) of D.C. Law 6-144, the Mayor shall identify all debts owed to the government by an employee or former employee for other than an erroneous payment, that have been neither acknowledged in writing nor reduced to judgment, and the names of each such employee or former employee, the amount of the debt, and supporting documentation, shall be forwarded to the Corporation Counsel for appropriate action.
D.C. Mun. Regs. tit. 6, r. 6-B2903