77 Pa. Stat. § 1052
As hereafter used in this act, unless the context or subject matter otherwise require--
"Fund" means the Workers' Compensation Security Fund created by this act.
"Fund year" means the calendar year.
"Stock company" means any stock corporation authorized to transact the business of Workmen's Compensation Insurance in this Commonwealth, except an insolvent stock company.
"Mutual carrier" means any corporation or association organized and operating on the mutual plan, including the State Workmen's Insurance Fund, authorized to transact the business of workmen's compensation insurance in this Commonwealth, except an insolvent mutual carrier.
"Reciprocal exchange" means any association or group of persons exchanging contracts of insurance or indemnity on the reciprocal or interinsurance plan, authorized to transact the business of workmen's compensation insurance in this Commonwealth, except an insolvent reciprocal exchange.
"Carrier" means either a stock company, a mutual company, a reciprocal exchange, or the State Workmen's Insurance Fund, as the context may require.
"Insolvent stock company," "insolvent mutual carrier," or "insolvent reciprocal exchange" means a stock company, a mutual company, a reciprocal exchange, or the State Workmen's Insurance Fund, as the case may be, which has been determined to be insolvent, or for which, or for the assets of which, a receiver or liquidator, howsoever entitled, has been appointed by a court or public officer of competent jurisdiction and authority, after the effective date of this act.
"Commissioner" means the Insurance Commissioner of this Commonwealth.
"Workmen's Compensation Law," means The Workmen's Compensation Act of 1915 or any supplement or amendment thereto or revision thereof, the Pennsylvania Occupational Disease Act of 1939 or any supplement or amendment thereto or revision thereof and the Longshore and Harbor Workers' Compensation Act (44 Stat. 1424,33 U.S.C. § 901 et seq.).
77 P.S. § 1052