5 C.F.R. § 9901.373 Conversion of employees to the NSPS pay system.
Title 5 - Administrative Personnel
(a) When the NSPS pay system is established under this subpart and applied to a category of employees, employees will be converted to the system without a reduction in their rate of pay (including basic pay and any applicable locality payment under 5 U.S.C. 5304, special rate supplement under 5 U.S.C. 5305, local market supplement under §9901.332, or similar payment under other legal authority). (b) When an employee receiving a special rate under 5 U.S.C. 5305 before conversion is converted to an equal rate of pay under the NSPS pay system that consists of a basic rate and a local market supplement, the conversion is not a reduction in pay for the purpose of applying subpart G of this part (or similar authority). (c) If another personnel action (e.g., promotion, geographic movement) takes effect on the same day as the effective date of an employee's conversion to the new pay system, the other action will be processed under the rules pertaining to the employee's former system before processing the conversion action. (d) An employee on a temporary promotion at the time of conversion will be returned to his or her official position of record prior to processing the conversion. If the employee is temporarily promoted immediately after the conversion, pay will be set under the rules for promotion increases under the NSPS pay system. (e) The Secretary has discretion to make one-time pay adjustments for employees when they are converted to the NSPS pay system. The Secretary will issue implementing issuances governing any such pay adjustment, including rules governing employee eligibility, pay computations, and the timing of any such pay adjustment.
Title 5: Administrative Personnel
PART 9901—DEPARTMENT OF DEFENSE HUMAN RESOURCES MANAGEMENT AND LABOR RELATIONS SYSTEMS
Subpart C—Pay and Pay Administration
Conversion Provisions
§ 9901.373 Conversion of employees to the NSPS pay system.

