' Subrogation has its origins in chancery and is based on the important public policy that the party causing a loss in the first place should bear the ultimate. Cozen O'Connor is the world's leading subrogation and recovery law firm.We founded our subrogation and recovery practice in 1970. Subrogation claims aid insurance companies in recovering expenses they pay out when they're not liable for damages. The Illinois workers' compensation law is 820 ILCS 305. Subrogation liens can reduce the funds available to assist with your recovery. Illinois has finally joined the majority of jurisdictions1 adopting an equitably modified version of the "make whole" doctrine for subrogation claims. Own name for the complete amount of his loss. Subrogation outsourcing is when an insurance company assigns a BPO provider to go after a third party that has caused a loss to an insured patient. If a subrogation action is valid, the actual defending begins.