When questions arise concerning the practice of law in Pennsylvania — such as whether entities may appear pro se in unemployment compensation hearings — the state’s Supreme Court, and not its Legislature, enjoys exclusive jurisdiction, an en banc panel of the Commonwealth Court has stressed in a 5-2 holding.

The judges’ decision Tuesday in Piunti v. Commonwealth stems from a recent fight over the ability of Pennsylvania corporations to be represented in unemployment proceedings by non-attorney non-employees.