The Mayor shall have the authority to: (1) Investigate and ascertain the minimum work week of a covered employee; (2) Enter and inspect a covered location of a covered employer to: (A) Inspect and copy: (i) Books; (ii) Registers; (iii) Payrolls; or (iv) Other records the Mayor considers necessary or appropriate; or (B) Question a covered employee to ascertain whether the covered employer is in compliance with the requirements of this chapter; (3) Require a covered employer to provide a sworn statement pertaining to the employment of a covered employee regarding: (A) Wages and hours; and (B) Any other information pertaining to the employment of the covered employee that the Mayor considers necessary or appropriate to carry out the purposes of this chapter; and (4) Following an admission of a violation by a respondent to a complaint, conduct an audit or issue a subpoena to determine if the rights of covered employees other than the complainant have also been violated.