The General Confederation of Labor - Workers' Force (French: Confédération Générale du Travail - Force Ouvrière, or simply Force Ouvrière) is one of the five major union federations in France.
FO is a member of the European Trade Union Confederation. Its leader is Jean-Claude Mailly. For a number of decades, FO has been dominated by members of the Internationalist Communist Organization (which now an affiliate of the Workers' Party).