Every Federal department, agency, corporation or branch, whether executive, legislative, or judicial, and the District of Columbia Government (included in this part collectively in the term department or agency) having employees or Members of Congress (hereinafter referred to in this part as Members) subject to subchapter III of chapter 83 of title 5, United States Code, shall initiate and maintain retirement accounts for those employees and Members as prescribed by OPM issuances. [33 FR 12498, Sept. 4, 1968, as amended at 66 FR 66711, Dec. 27, 2001]