[Code of Federal Regulations] [Title 5, Volume 3] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 5CFR1651.5] [Page 274] TITLE 5--ADMINISTRATIVE PERSONNEL CHAPTER VI--FEDERAL RETIREMENT THRIFT INVESTMENT BOARD PART 1651_DEATH BENEFITS--Table of Contents Sec. 1651.5 Spouse of participant. (a) For purposes of payment under Sec. 1651.2(a)(2), the spouse of the participant is the person to whom the participant was married on the date of death. A person is considered to be married even if the parties are separated, unless a court decree of divorce or annulment has been entered. State law of the participant's domicile will be used to determine whether the participant was married at the time of death. (b) If a person claims to have a marriage at common law with a deceased participant, the TSP will pay benefits to the putative spouse under Sec. 1651.2(a)(2) in accordance with the marital status shown on the most recent Federal income tax return filed by the participant. Alternatively, the putative spouse may submit a court order or administrative adjudication determining that the common law marriage is valid. [71 FR 9897, Feb. 28, 2006]