EN
The article analyzes the social security system from the point of its evolutionary contents. The authoress proceeds from an assumption that as the time goes by the classical rules in functioning of the social security system undergo changes adjusting themselves to new conditions both within the framework of the capitalist and socialist social formation. This does not imply, however, that the social security system disappears or becomes transformed in a social protection. It constitutes only a component of the social protection while transformations occurring In the social security system are an expression of inevitable change resulting from a dialectic development of social relations.