The aim of this chapter is to address the origin and development of the concept of the welfare state and its different types in our societies. Our interest is that the conception of the welfare state is an unavoidable part of social policies in contemporary societies and whatever the type of welfare state that we have right now, is the result of social development that has conditioned. The objective of this article is to address the origin and development of the concept of welfare state and its different types existing in contemporary societies. Our interest is that the welfare state is a framework design social policies currently unavoidable and not some type of welfare state existing at the moment, it is the fruit of social development that the conditioning.