(a) The Title IV-D agency shall establish procedures for the reduction in the amount of or termination of withholding from income on the liquidation of an arrearages or the termination of the obligation of support in Title IV-D cases. The procedures shall provide that the payment of overdue support may not be used as the sole basis for terminating withholding.
(b) At the request of the Title IV-D agency, the clerk of the court shall issue a judicial writ of withholding to the obligor's employer reflecting any modification or changes in the amount to be withheld or the termination of withholding.