5 CFR § 530.309 - Miscellaneous provisions.
(a) A special rate may be paid only for those hours for which an employee is in a pay status.
(b) A pay increase caused by an employee becoming entitled to a new or higher special rate supplement is not an equivalent increase in pay within the meaning of 5 U.S.C. 5335. (See 5 CFR 531.407(c).)
(c) A special rate is included in an employee's total remuneration, as defined in 5 CFR 551.511(b), and straight time rate of pay, as defined in 5 CFR 551.512(b), for the purpose of overtime pay computations under the Fair Labor Standards Act of 1938, as amended.
(d) Consistent with § 530.308, the reduction or termination of an employee's special rate supplement in accordance with the requirements of this subpart is not an adverse action under 5 CFR part 752, subpart D, or an action under 5 CFR 930.211.