45 C.F.R. § 73.501 – Applicability.

(a) The regulations in this subpart apply to the commissioned officers of the Public Health Service on active or inactive duty, other than the Assistant Secretary for Health and the Surgeon General. For purposes of this subpart, these commissioned officers are referred to as “covered employees.” Commissioned officers serving in the Ready Reserve Corps, not on active or inactive duty, should avoid inferences that their political activities imply or appear to imply official sponsorship, approval, or endorsement by the Department. All Department employees, including commissioned officers of the Public Health Service on active or inactive duty, are subject to the criminal provisions governing political activity contained in chapter 29 of title 18, United States Code (18 U.S.C. 592-611).
(b) An employee who is appointed by the President by and with the advice and consent of the Senate to serve in the position of Assistant Secretary for Health or Surgeon General of the Public Health Service, who may serve simultaneously as a commissioned officer of the Public Health Service, is not covered by this subpart. The Assistant Secretary for Health and the Surgeon General of the Public Health Service are executive agency employees:
1. (1) The duties and responsibilities of whose positions continue outside normal duty hours and while away from the normal duty post; and
2. (2) Who are appointed by the President by and with the advice and consent of the Senate (PAS) whose positions are located within the United States and who determine policies to be pursued by the United States in the nationwide administration of Federal laws; and, as such, irrespective of the appointees' status as commissioned officers, the Assistant Secretary for Health and the Surgeon General of the Public Health Service are subject to the political activity restrictions contained in subchapter III of chapter 73 of title 5, United States Code, and the implementing regulations in 5 CFR parts 733 and 734, that are applicable to other PAS positions within the Department, except the Inspector General.
(c) Each employee covered under this subpart is individually responsible for refraining from prohibited political activity and is accountable for political activity by another person acting as the employee's agent or under the employee's direction or control if the employee is thus accomplishing indirectly what the employee may not lawfully do directly and openly.
(d) Each employee covered under this subpart is subject to the subpart's restrictions, even where the covered employee is on paid leave, compensatory time off, credit hours, time off as an incentive award, or excused or authorized absence (including leave without pay), and even where the employee's resignation has been accepted. A separated employee who has received a lump-sum payment for annual leave is not subject to the restrictions during the period covered by the lump-sum payment or thereafter if the payment has ended the individual's employment with the Federal Government and provided the individual does not return to Federal employment during that period. A covered employee is subject to the prohibitions contained in this subpart for 24 hours per day and is not permitted to take annual leave or a leave of absence to work with a political candidate, committee, or organization, or to become a candidate for office with the understanding that the employee will resign the employee's position if nominated or elected.