[Code of Federal Regulations] [Title 5, Volume 3] [Revised as of January 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 5CFR1620.41] [Page 213] TITLE 5--ADMINISTRATIVE PERSONNEL CHAPTER VI--FEDERAL RETIREMENT THRIFT INVESTMENT BOARD PART 1620--EXPANDED AND CONTINUING ELIGIBILITY--Table of Contents Subpart E--Uniformed Services Employment and Reemployment Rights Act (USERRA)--Covered Military Service Sec. 1620.41 Definitions. As used in this subpart: Basic pay means basic pay as defined in Sec. 1620.2, except for the portion of the retroactive period when an employee did not receive a Federal salary. In that case, basic pay is the rate of pay that would have been payable to the employee had he or she remained continuously employed in the position last held before separating (or entering leave- without-pay status) to perform military service. Current contributions means those contributions that are made prospectively for any pay period after the employee has been reemployed. Leave without pay or LWOP means a temporary nonpay status and absence from duty (including military furlough) to perform military service. Reemployed or reemployment means reemployed in (or restored from a nonpay status to) a position pursuant to 38 U.S.C. chapter 43, which is subject to 5 U.S.C. chapter 84 or which entitles the employee to contribute to the TSP pursuant to 5 U.S.C. 8351. Retroactive period means the period for which an employee is entitled to make up missed employee contributions and to receive retroactive agency contributions. Retroactive period beginning date means, for an employee who was eligible to contribute to the TSP when military service began, the date following the effective date of separation or, in the case of LWOP, the date the employee enters LWOP status. For an employee who was not eligible to make TSP contributions when military service began, the retroactive period begins on the first day of the first pay period in the election period during which the employee would have been eligible to make contributions had the employee remained in Federal civilian service. Retroactive period ending date means the earlier of the following two dates: the date before the first day of the first election period during which a contribution election could have been made effective after reemployment, or the last day of the pay period before the pay period during which routine current contributions are begun after the employee is reemployed (or restored). If an employee who was making contributions when he or she separated elects not to make routine current contributions, the ending date of the retroactive period is the last day of the pay period during which the employee elects to terminate contributions. Separation or separated means the period an employee was separated from Federal civilian service (or entered a leave-without-pay status) in order to perform military service.