Q. What percentage would be added to my retirement annuity if my sick leave balance is 700 hours?
A. Your annuity computation would be increased by four months, with any hours in excess of 696 being dropped. What percentage that would equal depends on your retirement system. A year of sick leave equals 2 percent for a CSRS retiree, 1 percent for a FERS retiree. Dividing either number by 3 would give you the percentage. Note: Since only full months are used in an annuity computation, any left over hours of actual service would be added to your 700 hours of sick leave.. If the combination totaled 870 hours, your annuity would be increased by five months. Any hours that don’t add up to a full month would be discarded.