Traditionally, DB participants could not commence pension payments until retirement. For those who remained employed beyond NRA, many plans provided an actuarial increase for the entire period until payment commencement, ensuring that the economic value earned as of the NRA wouldn’t be lost — but many others provided no actuarial increase. Without an actuarial adjustment the decrease in the economic value from delaying retirement could be very significant, especially where the benefit amount was frozen.
In the late-1980s Congress started requiring in-service distributions once a participant reached the April 1 following the age 70½ calendar year. For a DB plan with an age 65 NRA that didn’t provided a late commencement adjustment, this requirement limited the potential loss in value from working past NRA to about six or seven years’ worth of pension payments.
The requirement was repealed for non-5% owners in the early 2000s. But if a DB plan took advantage of the repeal it would have to actuarially increase the accrued benefit at least for the period after in-service distributions would have had to begin under the prior law — the period after the April 1 following the age 70½ calendar year. In other words, Congress didn’t want this repeal to remove the limit it had placed on the potential loss in pension value from working past NRA.
From this perspective, it would be surprising if the current change from 70½ to 72 that applies to former employees and 5% owners was intended to also increase the allowed loss in value for non-owner participants still working past their NRA by another 18 months’ worth of pension payments.