Its aim was to develop a new economy, founded on trade unions and corporatism. Collaborators to the Cahiers Bleus included Edouard Berth, who had co-founded the Cercle Proudhon with Valois, Marcel Déat, a future neo-socialist excluded from the French Section of the Workers' International (SFIO) and then collaborationist, Bertrand de Jouvenel, co-founder of the liberal Mont Pelerin Society, and Pierre Mendès France, future Prime minister during the Fourth Republic, from the young guard (jeunes loups) of the Radical-Socialist Party.
The aim was to build an economy based on trade unions and corporatism. Cahiers Bleus collaborators were Edouard Berth, co-founder of the Cercle Proudhon with Valois; Marcel Déat, later excluded from SFIO and collaborator; Bertrand de Jouvenel, a Mont Pelerin Society co-founder; and Pierre Mendès France, future Prime Minister during the Fourth Republic, from the Radical-Socialist Party's young guard.