PUBLIC LAW 102-496—OCT. 24, 1992 106 STAT. 3205 'Xii) the ratio which the participant's actual service after April 6, 1986 (as determined by prorating the participant's total service after that date to reflect the service that was performed on a part-time basis) bears to the total service after that date that would be creditable for the participant if all the service had been performed on a full-time basis. "(D) TREATMENT OF EMPLOYMENT ON TEMPORARY OR INTERMITTENT BASIS.—Employment on a temporary or intermittent basis shall not oe considered to be service on a part-time basis for purposes of this paragraph. "(4) HlGH-3 AVERAGE PAY DEFINED.—For purposes of this subsection, a participant's high-3 average pay is the amount of the participant's average basic pay for the highest 3 consecutive years or the participant's service (or, in the case of an annuity computed under section 232 and based on less than 3 years, over the total service) for which full contributions have been made to the fund.
- (5) COMPUTATION OF SERVICE.—In determining the aggregate period of service upon which an annuity is to be based,
any fractional part of a month shall not be counted, "(b) SPOUSE OR FORMER SPOUSE SURVIVOR ANNUITY.— " (1) REDUCTION IN PARTICIPANT'S ANNUITY TO PROVIDE SPOUSE OR FORMER SPOUSE SURVIVOR ANNUITY. — "(A) GENERAL RULE. — Except to the extent provided otherwise under a written election under subparagraph (B) or (C), if at the time of retirement a participant or former participant is married (or has a former spouse who has not remarried before attaining age 55), the participant shall receive a reduced annuity and provide a survivor annuity for the participant's spouse under this subsection or former spouse under section 222(b), or a combination of such annuities, as the case may be. "(B) JOINT ELECTION FOR WAIVER OR REDUCTION OF SPOUSE SURVIVOR ANNUITY.—^A married participant or former p£u*ticipant and the participant's spouse may jointly elect in writing at the time of retirement to waive a survivor annuity for that spouse under this section or to reduce such survivor annuity under this section by designating a portion of the annuity of the participant as the base for the survivor annuity. If the marriage is dissolved following an election for such a reduced annuity and the spouse qualifies as a former spouse, the base used in calculating any annuity of the former spouse under section 222(b) may not exceed the portion of the participant's annuity designated under this subparagraph. "(C) JOINT ELECTION OF PARTICIPANT AND FORMER SPOUSE.—If a participant or former participant has a former spouse, such participant and the participant's former spouse may jointly elect by spousal agreement under section 264(b) to waive, reduce, or increase a survivor annuity under section 222(b) for that former spouse. Any such election must be made (i) before the end of the 12-month period beginning on the date on which the divorce or annulment involving that former spouse becomes final, or (ii) at the time of retirement of the participant, whichever is later.
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