If your ex is not paying their court ordered child support and is working under the table, fill this form out and mail to the IRS. There are several child support enforcement options available to you if your ex is working under the table.If he gets arrested for getting paid under the table (which can be illegal from income taxes) you would end up getting not getting anything. It takes time and legal cost. You can file a motion to enforce child support. (NOTE: Fill out this page only if your case involves child support.) 16. This calculator provides only an estimate and is not a guarantee of the amount of child support that will be ordered. Alabama's Child Support Enforcement Program is a Federal, State and local partnership designed to get your child the financial and medical support he or she. These forms allow parents, families, and employers to provide the Child Support Division with additional information so we can better serve you. This booklet before starting to fill out your court forms.