53 Pa. Stat. § 637
who is injured in the performance of his duties including, in the case of firemen, duty as special fire police, and by reason thereof is temporarily incapacitated from performing his duties, shall be paid by the Commonwealth of Pennsylvania if an employe identified under paragraph (1), (2), (3), (4), (5), (6), (7), (8) or (12) or by the Delaware River Port Authority if a member of the Delaware River Port Authority Police or by the county, township or municipality, by which he is employed, his full rate of salary, as fixed by ordinance or resolution, until the disability arising therefrom has ceased. All medical and hospital bills, incurred in connection with any such injury, shall be paid by the Commonwealth of Pennsylvania or by the Delaware River Port Authority or by such county, city, township or municipality. During the time salary for temporary incapacity shall be paid by the Commonwealth of Pennsylvania or by the Delaware River Port Authority or by the county, city, borough, town or township, any workmen's compensation, received or collected by any such employe for such period, shall be turned over to the Commonwealth of Pennsylvania or to the Delaware River Port Authority or to such county, city, borough, town or township, and paid into the treasury thereof, and if such payment shall not be so made by the employe the amount so due the Commonwealth of Pennsylvania, the Delaware River Port Authority or the county, city, borough, town or township shall be deducted from any salary then or thereafter becoming due and owing.
who have served for four consecutive years or longer, diseases of the heart and tuberculosis of the respiratory system, contracted or incurred by any of them after four years of continuous service as such, and caused by extreme overexertion in times of stress or danger or by exposure to heat, smoke, fumes or gases, arising directly out of the employment shall be compensable in accordance with the terms hereof; and unless any such disability shall be compensable under the compensation laws as having been caused by accidental injury, such disability shall be compensable as occupational disease disabilities are presently compensable under the compensation laws of this Commonwealth. It shall be presumed that tuberculosis of the respiratory system contracted or incurred after four consecutive years of service was contracted or incurred as a direct result of employment.
53 P.S. § 637