[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: 5CFR1600.17] [Page 180] TITLE 5--ADMINISTRATIVE PERSONNEL CHAPTER VI--FEDERAL RETIREMENT THRIFT INVESTMENT BOARD PART 1600--EMPLOYEE ELECTIONS TO CONTRIBUTE TO THE THRIFT SAVINGS PLAN--Table of Contents Subpart F--Miscellaneous Sec. 1600.17 CSRS employees who are appointed without a break in service to a position mandatorily covered by Social Security and who are consequently covered by either FERS or the CSRS offset system. (a) CSRS employees who are appointed to a position mandatorily covered by Social Security, who are consequently required by law to become subject to FERS as a result of such appointment, and who do not have a break in employment of more than three calendar days between their old and new positions, will be eligible to make a new election to participate as a FERS employee in the Thrift Savings Plan under this part, under the rules and conditions described in Sec. 1600.12. (b) CSRS employees who are appointed to a position mandatorily covered by Social Security, who are required by law to become subject to the CSRS offset system as a result of such appointment, and who do not have a break in employment of more than three calendar days between the old and new positions will be eligible to participate as an employee under CSRS offset in this new position. They may not make any special election to participate in the Thrift Savings Plan as a result of such appointment. These officials shall continue to be treated as CSRS employees under this part.