Your spouse fills out a court form. Your spouse can fill out the Stay of Service of Earnings Assignment Order (form FL-455).This means that if the noncustodial parent lives in another state, Illinois can still enforce the child support order. Learn about the kinds of spousal support in California, how judges decide the amount and duration of alimony, and whether you can change the award later. We've rounded up a few commonly asked questions regarding alimony and child support below. Q: Can I put child support obligations in my prenup? Local child support agencies in California will help you collect spousal support if you're also receiving child support from your ex. The termination of alimony is a substantial change in circumstances warranting the modification of child support. Start with paperwork. Illinois Divorce, Child Support, and Maintenance Forms (Illinois Courts).