In Turkish, the term 'subsidiarity' denotes: 'provision of services at local level'; 'provision of services at closest level to citizens'. Because of the destructive effects of liberalism at the beginning of 20th century, welfare state policies started to be implemented in the following period. In this context, the role of the state in economics has been increased. The public services are produced by central and local governments in unitary states, and in federal states by federal and local governments. The reason for such stratification is that the domain of service and the domain of the expansion of benefits are different for each service. Under these circumstances, services are tried to be provided at the lowest possible level. The principle of subsidiarity is becoming more and more important within the European Union. In Turkey, there are examples of implementation of subsidiarity principle; however, the principle is criticized in various ways.