Vesting Proration Method
The Vesting Proration Method topic of a Benefit Promise allows you to specify the Vesting proration method for accrual definitions used in retirement benefits. Its parameters are used in conjunction with the settings under the Vesting topic of any accrual definition components used to define retirement benefits that are included in this Benefit Promise. The accrual definition parameters indicate, in part, (1) whether service continues after termination and (2) whether a pro rata temporis fraction should be applied, while these parameters define (1) the period to which service continues (for retirement benefits only) and (2) the denominator of the pro rata temporis fraction.
Specifically, for retirement benefits only, specify:
When (credited) service continues after termination, whether to project to Normal Retirement Date or Retirement decrement. Note that, for decrements other than retirement, if credited service continues after termination, it is always projected to the second decrement (death or disability).
When pro rata temporis fraction applies, denominator is (vesting) service at either Normal Retirement Date or Retirement decrement. If credited service is projected to normal retirement date, the only available choice is that the denominator of the pro rata temporis fraction also be service at the normal retirement date. Note that, for decrements other than retirement, the denominator of the pro rata temporis fraction is always vesting service at Normal Retirement Date. The numerator of the pro rata temporis fraction is always service at termination.