The Nordic model comprises the economic and social policies as well as typical cultural practices common to the Nordic countries (Denmark, Finland, Iceland, Norway and Sweden). This includes a comprehensive welfare state and multi-level collective bargaining based on the economic foundations of free market capitalism, with a high percentage of the workforce unionized and a large percentage of the population employed by the public sector (roughly 30% of the work force). Although it was developed in the 1930s under the leadership of social democrats, the Nordic model began to gain attention after World War II.