We administer retirement programs for Michigan's state employees, public school employees, judges, state police, and National Guard members. For example, Federal, state, or local government plans and some church plans are not covered.Dynamic name search: Find 5500s even if the plan sponsor's name changed. Learn about the ERISA Audit and benefit plan audit services offered to Detroit and Michigan 401k plan sponsors - JLK Rosenberger - Detroit ERISA Audit. Use the links on the right of this page to learn more about how to search for unclaimed retirement benefits and steps to take before contacting PBGC. ERISA provides that the following retirement plan documents must be retained for at least six years from the date the Form 5500 filing is due:. The Schipper Law Group offers ERISA, healthcare, welfar, and pension benefits lawyer representation for participants and beneficiaries throughout Michigan.