D.C. Mun. Regs. tit. 6-B, § 1227
1227.1 As provided in section 1203(a) of the CMPA (D.C. Official Code § 1-612.03 (a) (2006 Repl.)), an employee shall be entitled to earn both annual and sick leave as provided herein, except for the following:
(a) An intermittent employee who does not have a scheduled tour of duty;
(b) An elected official; or
(c) A temporary employee appointed for less than ninety (90) days.
1227.2 The days of annual and sick leave provided by this chapter shall be days on which an employee would otherwise work and receive pay, but shall exclude holidays and nonworkdays established by statute or administrative order.
1227.3 Other than for the liquidation of advanced sick leave indebtedness as provided in section 1230.4 of this chapter, the retroactive substitution of annual leave, compensatory time, or leave without pay for sick leave shall not be authorized.
SOURCE: Final Rulemaking published at 54 DCR 11538 (November 30, 2007); as amended by Notice of Final Rulemaking published at 59 DCR 2690, 2693 (April 6, 2012).