5 C.F.R. § 575.403
In this subpart:
Agency has the meaning given that term in 5 U.S.C. 5102 .
Continuing pay means the aggregate of all continuing payments and annual premium pay received by an employee at any one time.
Continuing payment means basic pay and any other form of pay that is paid in the same manner and at the same time as basic pay-i.e., for periods during which an employee receives basic pay.
Employee has the meaning given that term in 5 U.S.C. 5102 .
Head of agency means 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.
Rate of basic pay means the rate of pay fixed by law or administrative action for the position to which the employee is or will be appointed before deductions and including any special rate under 5 CFR part 530, subpart C; locality-based comparability payment under 5 CFR part 531 , subpart F; or similar payment or supplement under other legal authority, but excluding additional pay of any other kind. For example, rate of basic pay excludes a night differential under 5 U.S.C. 5343(f) , an environment differential under 5 U.S.C. 5343(c)(4) , or a similar payment under other legal authority.
Supervisor has the meaning given that term in 5 U.S.C. 7103(a)(10) .
5 C.F.R. §575.403