D.C. Mun. Regs. tit. 6, r. 6-B1228
A full-time employee:
A full-time employee who initially enters on duty on the first (1st) workday of a biweekly pay period shall accrue the full amount of leave to which he or she would be entitled for that biweekly pay period.
A full-time employee who initially enters on duty after the first (1st) workday of a biweekly pay period, but not later than the first (1st) workday of the second (2nd) week of a biweekly pay period, shall accrue one-half (1/2) of the leave to which he or she would have been entitled for a full biweekly pay period.
A full-time employee who initially enters on duty after the first (1st) workday of the second week of a biweekly pay period shall not be entitled to accrue leave for that biweekly pay period.
A full-time employee who separates after the close of business on the last workday of a biweekly pay period shall accrue the full amount of leave to which he or she would be entitled for that biweekly pay period.
A full-time employee who separates after the completion of one (1) workweek in a biweekly pay period, but prior to the close of business on the last day of a biweekly pay period, shall accrue one-half (1/2) of the leave to which he or she would have been entitled for a full biweekly pay period.
A full-time employee who separates prior to the completion of the first week in a biweekly pay period shall not be entitled to accrue leave for that biweekly pay period.
A full-time employee paid on other than a biweekly pay period basis earns leave on a pro-rata basis for a full pay period.
Except as provided in section 1228.10 of this section, a full-time employee shall earn leave during each full biweekly pay period while in a pay status or in a combination of pay status and nonpay status.
Whenever the number of hours of nonpay status accrued by a full-time employee during a leave year equals the number of base pay hours eighty (80) in a biweekly pay period, the employee's accrued leave shall immediately be reduced by the amount of annual and sick leave accruals the employee earns during one (1) biweekly pay period.
For the purpose of determining reduction of leave credits under this section when a full-time employee has one (1) or more breaks in service during the leave year, the agency shall include all hours in a nonpay status for each period of service during the leave year in which the leave accrued.
When a reduction in leave credits results in a debit to a full-time employee's leave account at the end of a leave year, the debit shall be carried forward as a charge against the leave to be earned by the employee in the next leave year, unless the employee and the agency agree to a repayment as provided in section 1230.4 of this chapter.
A part-time employee, unless otherwise excluded, shall be entitled to accrue annual and sick leave on a pro-rata basis.
Hours in a pay status for which the employee would be entitled to overtime pay shall be disregarded in computing the leave earnings of a part-time employee.
A part-time employee must serve under an established tour of duty for each of the two (2) administrative workweeks in each biweekly pay period in order to accrue leave.
A part-time employee who completes a full biweekly pay period may carry over, from one pay period to the next, those hours of service in a pay status that do not equal the number necessary for a minimum leave accrual of one (1) hour, until sufficient service is rendered to total the hourly accrual; but if the employee changes to full-time employment status and has insufficient service credit to earn the minimum of one (1) hour, the fractional hours of service shall be lost because of the change from part-time to full-time status.
D.C. Mun. Regs. tit. 6, r. 6-B1228