my son father owes me over &40k in back child support but he is an independent contractor how can I go after him for it

Child support arrears collection -- when the obligor fights it -- can be a lengthy and difficult process, but we have collected full arrears from many "independent contractors" -- it usually takes a combination of motions to reduce arrears to judgment, diligent execution and garnishment efforts, sometimes asset checks, and occasionally examinations of judgment debtor. For background, see: http://willicklawgroup.com/child-support/ http://willicklawgroup.com/interest-penalties/ http://willicklawgroup.com/vol-59-calculating-judgment-arrearages/ If you are not having success with your efforts, consider consulting with a family law specialist well versed in collections actions, in this office or in some other one.