Who should employers contact if they have questions about the ARC form? Mike E. July 11, 2021 02:48 Please contact your broker if you have questions about the ARC form. Related articles ARC Process Walkthrough ARC Form Fields Guide What are the acceptable forms of proof of chamber membership? What is the Annual Rate and Census Reconciliation (ARC) form? Do sole proprietors need to do the ARC form? Comments 0 comments Please sign in to leave a comment.