The Federal Child Support Portal (FPLS) offers employers a variety of online applications to help them to meet their responsibilities. Child Support Forms ; 4-3a.Petition (Commissioner). For EFT Registration, call the New York State. Employers are critical partners in the collection of child support. Click any of the buttons below for additional information on more key topics for employers. These forms allow parents, families, and employers to provide the Child Support Division with additional information so we can better serve you. Step 1: Fill out the forms: If you have an existing case, no matter how old, use the same case title and case number. The IWO is the OMBapproved form (PDF) used for income withholding in tribal, intrastate, and interstate cases as well as all child support orders. If Child Support Services (CSS or DCSS) is involved in your case, enter the CSS case number here.