D.C. Mun. Regs. tit. 5-E, § 1031
1031.1 To the extent permitted by law, where subjects covered by this chapter are incorporated into a duly ratified collective bargaining agreement, the negotiated provisions shall supersede and take precedence over the otherwise applicable provisions of this chapter.
SOURCE: Final Rulemaking published at 27 DCR 4297, 4327 (October 3, 1980).