5 CFR § 1620.32
Employees who move to a NAF instrumentality on or after August 10, 1996
November 4, 2020
Any employee who moves from a CSRS- or FERS-covered position to a NAF instrumentality on or after August 10, 1996, and who elects to continue to be covered by CSRS or FERS, will be eligible to contribute to the TSP as determined in accordance with 5 CFR part 1600.