O.C.G.A. § 45-7-57 (2019)

(a) Any department, agency, authority, commission, or other instrumentality of the state is authorized to deduct designated amounts from the wages or salaries of its employees and remit such moneys to one or more savings trust accounts established under Article 11 of Chapter 3 of Title 20. (b) No payroll deduction shall be made under this Code section without the employee’s written and voluntary consent designating the exact amount to be deducted. (c) Any employee who has authorized a deduction under this Code section is authorized to end such salary deduction upon written notice to the employer. (d) The fiscal authorities or other employees of the various departments, agencies, authorities, commissions, or other instrumentalities of this state shall incur no liability for errors or omissions made in the administration of payroll deductions authorized under this Code section.