Arbitration is a mandatory but non-binding informal hearing where a neutral arbitrator, or panel of arbitrators, is selected to hear the evidence in your case. Find out how cases are assigned to the Arbitration calendar and what eligibility requirements are involved.The Law Division Mandatory Arbitration program is an alternative dispute resolution process for civil suits seeking money damages. How do I file an Arbitration "AR" case? How do I file an Arbitration ("AR") case? Where is the Arbitration Center? The Will County Courthouse at 100 W. Jefferson St., 4th Floor Rm. 440, Joliet, IL 60432. ST. CLAIR COUNTY. Plaintiff. Arbitration cases are filed in the General Division of the Circuit Clerk's Office. If you fill out a form on a webpage, you will lose your progress.