Q. I am over 50 with more than 20 years of service, but under my minimum retirement age of 56. If voluntary early retirement is offered, do I also receive the FERS annuity supplement if I am under 56? Does the supplement calculation also include years working in the private sector and also paying into Social Security during those years? A. If you retire under the Voluntary Early Retirement Authority, you won’t be eligible for the special retirement supplement until you reach you minimum retirement age. The SRS will be based solely on your time as a FERS employee.