The Employees' Retirement System (ERS) was established in 1955. It was originally called the Supplemental Retirement System. This was the retirement system for general county employees. Since then, certain employees of Fairfax County Public Schools (FCPS) have also become members of the ERS. The FCPS employee members of ERS are, in general, all non-teacher and non-administrator positions. These include:
- school bus drivers
- cafeteria workers
- clerical staff
- custodians
- trades employees
There are number of retirement benefits available to members of the ERS which are summarized below.