Abstract
The author discuses the develpment of the concept of solidarity from Saint-Simon and Fourier, over Durkheim to present understanding of compulsory solidarity, based on internationally recognized social rights of citizens, guaranteed by constitutional laws of most European countries. He recognizes the difference between solidarity and humanism and humanitarian aid, the criteria being firm structure and mutuality.
He criticizes the doubts about the role of the social state and confirms, that the core of the social state is the protection of citizens and corresponding compulsory social solidarity organized by the state in an extent at least to provide a decent minimum living. In the last part the author comments the present social and health reforms.