Employers have 14 days to process an order or notice to withhold. The IWO is the OMBapproved form (PDF) used for income withholding in tribal, intrastate, and interstate cases as well as all child support orders.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. Instructs employers and federal agencies on how to process income withholding orders including examples of calculations. Minnesota Child Support Online is a secure website. It provides participants information about their Minnesota child support cases. Wage withholding lets you make your child support payments through your regular paycheck. The following information will give you a quick guide to how Minnesota child support payments are made and received. Child support is court-ordered payments for the financial support of a child.