Garnishment of wages, salaries or other compensation due from a county to any of its officers or employees is permitted. Employers cannot retaliate against an employee based on a wage assignment for alimony or child support, but the employer may impose a service charge of up to five percent, not to exceed $5.00 per month. The maximum amount of earnings that may be garnished is set out in T.C.A. § 26-2-106. For federal law regarding garnishments, see 15 U.S.C. § 1672(b).