(a) (1) Subject to the limitations set forth in Code Sections 18-4-6 and 18-4-53, the maximum part of disposable earnings for any work week which is subject to garnishment shall not exceed the lesser of:
(A) Twenty-five percent of the defendant's disposable earnings for that week; or
(B) The amount by which the defendant's disposable earnings for that week exceed $217.50.
(2) In case of earnings for a period other than a week, the proportionate fraction or multiple of 30 hours per week at $7.25 per hour shall be used.
(b) The limitation on garnishment set forth in subsection (a) of this Code section shall apply although the garnishee may receive a summons of garnishment in more than one garnishment case naming the same defendant unless the garnishee has received a summons of continuing garnishment for support as provided in Article 3 of this chapter.
(c) No employer shall discharge an employee by reason of the fact that such employee's earnings have been subjected to garnishment for any one obligation, even though more than one summons of garnishment may be served upon such employer with respect to the obligation.