The department shall enter and serve the order for withholding on the payor, its superintendent, manager, or other agent, by certified mail, first class mail, personal delivery, or electronically in accordance with an agreement authorizing electronic service between the department and the payor, its superintendent, manager, or other agent. A copy of the order shall be mailed to the obligor at the obligor's last known post office address. The order for withholding shall be entered whether or not the order for support contains a provision for withholding of income or property.
SDCL 25-7A-30