[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: 5CFR1600.4] [Page 176-177] 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 B--Elections Sec. 1600.4 Types of elections. (a) Contribution. During an open season, an eligible employee may elect any one of the following: (1) To make contributions; (2) To change the amount of existing contributions; or (3) To terminate contributions. [[Page 177]] (b) Investment choices. Contributions made for pay periods beginning in 1987 will be invested only in the Government Securities Investment Fund established by 5 U.S.C. 8438(b)(1)(A). Subsequent contributions may be invested in accordance with regulations which will provide contributing employees the option of investing limited amounts in the Fixed Income Investment Fund and the Common Stock Index Investment Fund established by 5 U.S.C. 8438 (b)(1)(B), (b)(1)(C), and (b)(2).