The IWO is the OMBapproved form (PDF) used for income withholding in tribal, intrastate, and interstate cases as well as all child support orders. The FOC will specify the date of mailing, the date to begin withholding, and where to send payments.In accordance with a support order. Child's Name (Last, First, MI). Instructs employers and federal agencies on how to process income withholding orders including examples of calculations. This form is used to notify an employer to withhold wages from a noncustodial parent when they have past-due child support. View the form in English. Employers may send one payment for all employees' support withholdings to the MiSDU. Payers wishing to pay their support will need to complete the MoneyGram form and use the Michigan's Receive Code of 14689 available at secure.moneygram. Withholding for Support is identified with the form number FEN058, FEN58A or FEN58D in the lower-left corner of the notice.