Georgia Code Title 47. Retirement and Pensions § 47-23-63

(a) As used in this Code section, the term:

(b) Any member who, on the effective date of his or her retirement, was serving in a part-time position shall be entitled to use all of his or her prior service credit for purposes of vesting for benefits and for the calculation of benefits.

(c) Any member who on the effective date of his or her retirement was serving in a full-time position shall be entitled to use any prior part-time service for vesting for benefits and shall be entitled to use such prior service for the calculation of benefits on the basis of a ratio determined by dividing the average monthly compensation for the 24 consecutive month period producing the highest such average during the part-time service by the average monthly salary during the 24 consecutive month period producing the highest such average during the full-time service. The resultant percentage will be multiplied by the total part-time service and the result added to the total full-time service, resulting in the total service to be used in all benefit calculations.

(d) Notwithstanding any provision of subsection (b) or (c) of this Code section to the contrary, any member who became a member pursuant to Code Section 47-23-40 shall be entitled to calculate his or her service as provided in the predecessor retirement system of which he or she was a member.