5 U.S.C. § 4505a - Performance-based cash awards

5 USC 4505a - Performance-based cash awards

(a) 
(1) An employee whose most recent performance rating was at the fully successful level or higher (or the equivalent thereof) may be paid a cash award under this section.
(2) A cash award under this section shall be equal to an amount determined appropriate by the head of the agency, but may not be more than 10 percent of the employees annual rate of basic pay. Notwithstanding the preceding sentence, the agency head may authorize a cash award equal to an amount exceeding 10 percent of the employees annual rate of basic pay if the agency head determines that exceptional performance by the employee justifies such an award, but in no case may an award under this section exceed 20 percent of the employees annual rate of basic pay.
(b) 
(1) A cash award under this section shall be paid as a lump sum, and may not be considered to be part of the basic pay of an employee.
(2) The failure to pay a cash award under this section, or the amount of such an award, may not be appealed. The preceding sentence shall not be construed to extinguish or lessen any right or remedy under subchapter II of chapter 12, chapter 71, or any of the laws referred to in section 2302 (d).
(c) The Office of Personnel Management shall prescribe such regulations as it considers necessary for the administration of subsections (a) and (b).
(d) The preceding provisions of this section shall be applicable with respect to any employee to whom subchapter III of chapter 53 applies, and to any category of employees provided for under subsection (e).
(e) At the request of the head of an Executive agency, the President may authorize the application of subsections (a) through (c) with respect to any category of employees within such agency who would not otherwise be covered by this section.