PL
The article introduces basic issues relating to the genesis, circumstances surrounding the creation, activity and finally the liquidation of the social insurance judiciary as it existed in Poland in the years 1945–1975. This institution was comprised of regional social insurance courts operating in selected voivodeship cities – as the court of first instance with the Social Insurance Tribunal in Warsaw [Trybunał Ubezpieczeń Społecznych w Warszawie] – as the court of second instance. The text discusses key issues related to the system, organization, and scope of material property as well as the judicial competence of the social security judiciary determining its character. Author also demonstrates that social insurance courts were the only administrative courts in existence in the Polish People's Republic before the creation of the Supreme Administrative Court [Naczelny Sąd Administracyjny].