Procedure by which automatic deductions are made from wages or income, as defined in the Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA), to pay a debt such as child support. Income withholding often is incorporated into the child support order and may be voluntary or involuntary. The provision dictates that an employer must withhold support from a non-custodial parent’s wages and transfer that withholding to the appropriate agency (the Centralized Collection Unit or State Disbursement Unit). Sometimes referred to as wage withholding.