The International Labour Organization (ILO), a tripartite specialized agency of the United Nations that sets international standards related to work, has 187 member states, as of August 2022. Established in 1919 as a result of the Treaty of Versailles, the ILO was the first agency to be incorporated into the UN in 1946, is the third oldest pre-existing UN agency, the fourth oldest existing multilateral organization and the only remaining organization with direct links to the League of Nations.