63 Pa. Stat. § 1902
The practice of social work, marriage and family therapy and professional counseling within this Commonwealth is hereby declared to affect the public safety and welfare and to be subject to regulation and control in the public interest to protect the public from unprofessional, improper, unauthorized and unqualified practice of licensed social work, licensed marriage and family therapy and licensed professional counseling. This act regulates only those who hold themselves out as licensed social workers, licensed clinical social workers, licensed marriage and family therapists or as licensed professional counselors. Acquisition of a license under this act shall not be made a condition of the employment of a person by the Commonwealth or any of its political subdivisions or by nonprofit agencies.
63 P.S. § 1902