Pracownicy przyjezdni (zakordonowi) na górnośląskim rynku pracy. Lata 1850-1939

In the period of open work markets in the European Union, and frequent migrations caused by search for employment it seems important to pay attention to experience gained due to the arrival of workers to the Upper Silesian work market as well as its results in the economic and social sphere. No state activity is able to defend the country from their consequences if so called "migration capacity" of the local community has expired. This "migratin capacity" of the local community defines the possibilities of the acceptance of assimilation of the newcomers without any social tensions as well as negative results in the eonomic and social sphere.