It had its roots in the Directorate of Labour, which was founded in 1945. Its purpose was to "prevent and remedy" unemployment in the Norwegian society. The name Aetat was taken into use in 2000, when the directorate was reorganized. Aetat had eighteen county offices, several local offices, and other branches, whereas the directorate remained the core of the agency. The leader of the directorate was called the "director of labour". The agency was subordinate to the Ministry of Government Administration.