268 A.2d 924 DeJesus, Appellant, v. Liberty Mutual Insurance Company. Supreme Court of Pennsylvania.May 6, 1970. July 2, 1970. Workmen’s Compensation — Insurance carrier — “Employer” — Immunity from common law liability — Constitutionality of § 303 of Workmen’s Compensation Act — Article III, § 18, as amended, of Pennsylvania Constitution — Purpose — Constitutional […]