42 Pa. C.S. § 8303 : Consolidated Statutes — JUDICIARY AND JUDICIAL PROCEDURE — CIVIL ACTIONS AND PROCEEDINGS — PARTICULAR RIGHTS AND IMMUNITIES — RIGHTS OF ACTION — Action for performance of a duty required by law

A person who is adjudged in an action in the nature of mandamus to have failed or refused without lawful justification to perform a duty required by law shall be liable in damages to the person aggrieved by such failure or refusal.