D.C. Mun. Regs. tit. 19, § 204
204.1 The President and Chief Executive Officer shall assign each employee position to a specific classification.
204.2 No supervisor or employee may regularly assign or perform duties outside the employee's position classification for more than thirty (30) days, unless the classification has been changed by the President and Chief Executive Officer.
204.3 The President and Chief Executive Officer shall provide any employee, upon request, a copy of the applicable description when assigned or reassigned to a new or different position classification.
SOURCE: Final Rulemaking published at 46 DCR 6236, 6238 (July 30, 1999); as amended by Final Rulemaking published at 59 DCR 8191, 8194 (July 6, 2012).