(a) An employer who receives more than one order or writ of withholding to withhold income from the same obligor shall withhold the combined amounts due under each order or writ unless the combined amounts due exceed the maximum total amount of allowed income withholding under § 8.106.
(b) If the combined amounts to be withheld under multiple orders or writs for the same obligor exceed the maximum total amount of allowed income withholding under § 8.106, the employer shall pay, until that maximum is reached, in the following order of priority:
(1) an equal amount toward current child support owed by the obligor in each order or writ until the employer has complied fully with each current child support obligation;
(2) an equal amount toward current maintenance owed by the obligor in each order or writ until the employer has complied fully with each current maintenance obligation;
(3) an equal amount toward child support arrearages owed by the obligor in each order or writ until the employer has complied fully with each order or writ for child support arrearages; and
(4) an equal amount toward maintenance arrearages owed by the obligor in each order or writ until the employer has complied fully with each order or writ for spousal maintenance arrearages.