D.C. Mun. Regs. tit. 7, § 3305
3305.1 Covered employers shall maintain any documentation necessary to establish compliance with the requirements of the Act for a minimum of three (3) years.
3305.2 Covered employers shall be responsible for providing any documentation necessary to prove compliance with the Act to the Department.
SOURCE: Final Rulemaking published at 66 DCR 10529 (August 16, 2019).