77 Pa. Stat. § 22b
In addition to those persons included within the definition of the word "employe" as defined in section 104 of the act of June 2, 1915 (P.L. 736), known as "The Pennsylvania Workmen's Compensation Act", reenacted and amended June 21, 1939 (P.L. 520), and amended February 28, 1956 (P.L. 1120), there shall be included all auxiliary police of the various cities, boroughs, incorporated towns and townships, who shall be "employes" of such cities, boroughs, incorporated towns and townships for all the purposes of the act, and shall be entitled to receive compensation in case of injuries received while actually engaged as policemen or while going to or returning from their place of duty or while participating in instruction or while answering any emergency call for any purpose or while performing any other duty authorized by the city, borough, incorporated town or township.
77 P.S. § 22b