Pay Administration
Questions and answers
Amendments to appendix A may be made by OPM on its own motion or at the request of an agency, as defined in 5 U.S.C. 5102(a)(1). (See 5 CFR 550.903(b).) The request for a hazard pay differential must be made by the head of an agency or an official who has been delegated the authority to act for the head of the agency in the matter concerned.