How Sick Leave Affects Your FERS Pension Calculation Under FERS, pension benefits are calculated based on an employee’s high-three average salary and total years of service. The FERS sick leave conversion chart helps employees determine how their unused sick leave translates into additional service time, boosting their pension. By using the sick leave conversion chart for FERS, empl... https://www.federalpensionadvisors.com/post/fers-sick-leave-conversion-chart