The article elaborates on the legal construction of citizenship within the welfare state. The concept of citizenship is constructed from the perspective of rights and is closely related to the legal development of various fields of law. Juridification processes in the welfare state directly concern the construction of social citizenship and indirectly affect both political and civil citizenship. Concentrating on juridification within the framework of the welfare state implies that the development of welfare law is the focal point of the article. To understand the implications of juridification processes in the welfare state, we concentrate on the relationship between social citizenship, on one hand, and political and civil citizenship, on the other, and consider the implications of the legal and institutional construction of social citizenship. Social rights may confine the scope of political and civil citizenship and at the same time enhance individual freedom and the extent of political action.