Illinois Petition To Contest Notice To Withhold Income is a document used by Illinois employers to contest a wage withholding order from the Illinois Department of Employment Security (IDES). The petition is used by employers to contest the withholding of wages from an employee's paycheck for reasons such as child support obligations, back taxes, or unpaid debts. Employers may use this document to appeal the withholding order or to request a hearing with the IDES to contest the order. There are two types of Illinois Petition To Contest Notice To Withhold Income: 1) Petition To Contest Notice To Withhold Income for Child Support Obligation and 2) Petition To Contest Notice To Withhold Income for Back Taxes or Unpaid Debts.