On 3 October 1955, Jacques Doublet, Director-General of Social Security in France and Chairman of the Subcommittee for Social Issues in the Intergovernmental Committee established by the Messina Conference, forwards to Paul-Henri Spaak, Belgian Foreign Minister and President of the Committee, a letter in which he gives an account of his meeting in Brussels with the representatives of the International Confederation of Christian Trade Unions (ICCTU) and emphasises their concerns regarding economic and social integration in Europe.