D.C. Mun. Regs. tit. 6, r. 6-B1232
Except as specified in subsection 1232.6 of this section, a full-time employee to whom this chapter applies shall earn annual leave as follows:
Except as provided in subsections 1232.5 and 1232.7 of this section, a part-time employee for whom there has been established in advance a regular tour of duty on one (1) or more days during each administrative workweek shall earn annual leave as follows:
A change in the rate of accrual of annual leave shall take effect at the beginning of the pay period after the pay period, or corresponding period for an employee who is not paid on the basis of biweekly pay periods, in which the employee completed the prescribed period of service.
When a full-time employee changes from the six-hour (6-hour) annual leave-earning category to the eight-hour (8-hour) category at the beginning of the last full biweekly pay period in the calendar year, his or her leave credit for that pay period shall not exceed eight (8) hours.
A part-time employee entitled to earn annual leave shall not earn annual leave for any hours worked for which he or she is entitled to overtime compensation under Chapter 11 of these regulations.
Except as otherwise required by law or regulation, a person who is receiving an annuity after retirement from any District government retirement system or from the District or federal government under the regular or early retirement provisions of the Civil Service Retirement System (CSRS), and who is subsequently employed by the District government as a full-time employee following retirement, shall earn four (4) hours of annual leave for each full biweekly pay period for the first three (3) years of post-retirement employment. The leave accrual rate shall progress to six (6) and eight (8) hours of annual leave, respectively, as specified in subsections 1232.1 (b) and (c).
Except as otherwise required by law or regulation, a person who is receiving an annuity after retirement from any District government retirement system or from the District or federal government under the regular or early retirement provisions of the CSRS, and who is subsequently employed by the District government as a part-time employee following retirement, shall earn one (1) hour of annual leave for each twenty (20) hours in a pay status for the first three (3) years of post-retirement employment. The leave accrual rate shall progress to one (1) hour of annual leave for each thirteen (13) hours in a pay status and one (1) hour of annual leave for each ten (10) hours in a pay status, respectively, as specified in subsections 1232.2 (b) and (c).
For the purposes of this section and section 1234 of this chapter, the terms "full-time employee" and "part-time employee" shall include full-time and part-time temporary employees; provided that the employee is serving under a temporary appointment of more than ninety (90) days.
D.C. Mun. Regs. tit. 6, r. 6-B1232