 In 1941, he headed the insurance program at Conservatoire National des Arts et Métiers (CNAM).Following the war, he began his career as an economic advisor, with a strong liberal, pro-European stance, while at the same time becoming one of the most recognized academic experts on industrial society.In 1945, Jean Monnet—often regarded as the father of the European Union—asked Fourastié to serve as an economic advisor on the "Commissariat général du Plan", a body of domestic policy experts under the authority of the Prime Minister of France.