FICSA came into being in Paris on 1st of May 1952, as the Staff Associations/Unions of the European Office of the United Nations (now known as United Nations Office at Geneva), United Nations, International Labour Organization (ILO), World Meteorological Organization (WMO), International Civil Aviation Organization (ICAO), United Nations Educational, Scientific and Cultural Organization (UNESCO) and World Health Organization (WHO) established FICSA as a federation and accepted its statutes.

Today, FICSA has grown as a federation that represents more than 30 000 international staff members and will convey its 78th Council in Paris to discuss the future of the Federation and the representativity of International Civil Servants.