MMC Benefits Handbook
How the SRP Works
The SRP formula uses your unlimited Eligible Monthly Pay, the SRP's benefit accrual percentage, your Social Security Primary Insurance Amount, your accrued benefit under the Benefit Equalization Plan, if any, and your accrued benefit under the Marsh & McLennan Companies Retirement Plan. There are no accruals under the SRP after the first 25 years of service.
Because benefit accruals were discontinued effective December 31, 2016 under both the Retirement Plan and the SRP, you cannot accrue any additional benefits under the SRP on or after January 1, 2017.