Founded in 1943, Arbitration Forums is a membership-focused organization dedicated to providing its membership exceptional service. Who pays the filing fee for participation in the Special Arbitration Forum and how much does it cost to file?This tutorial provides a step-by-step demonstration of filing for contribution in the Special Forum. View Online Tutorial. MWL represents auto insurance companies and self-insureds who are members of Arbitration Forums or subject to mandatory subrogation arbitration.