D.C. Mun. Regs. tit. 25-B, § 405
405.1 All persons working in direct contact with food, equipment, utensils, food- contact surfaces, or food-packaging materials shall keep their fingernails trimmed, filed, and maintained so that the edges and surfaces are cleanable and not rough.
405.2 Unless wearing intact gloves in good repair, a food employee may not wear fingernail polish or artificial fingernails when working with exposed food, equipment, utensils, food-contact surfaces, or food-packaging materials.
SOURCE: Final Rulemaking published at 56 DCR 5245 (July 3, 2009).