The IWO is the OMBapproved form (PDF) used for income withholding in tribal, intrastate, and interstate cases as well as all child support orders. Customer service to employers is a priority for the MiSDU.MiSDU offers several electronic payment options that serve different needs. Helpful information for employers regarding new hire reporting, wage withholding, National Medical Support Notice, and answers to frequently asked questions. Call 1- to report the name and address of the non-custodial parent's employer. You may also fax this information to . You may also file a Motion Regarding Support at any time you believe there has been a change of circumstances that affects support. All support orders issued in the state of Michigan must provide for a notice of income withholding. Orders and Instructions. You can link to the Michigan Legal Help site to find forms for filing motions regarding custody, child support, parenting time, and divorce.