In the spring of 1993, a number of labour unions in the United Kingdom and France met together and decided to join forces and speak in the name of the world's nuclear industry professional workers, to the executive bodies of the European Union.
This core group was soon joined by the unions of Belgium, Germany and Spain, together creating 'The European NucWorker - TEN', a not-for-profit association whose articles were subsequently filed in Paris.
When the first major media event for nuclear workers, the 1st Nuclear MaxiMarathon, was organized in 96’, contact was made worldwide with the representives of nuclear industry workers of more than fifteen countries.
The ensuing conversations led the representatives of Canada, the Czech Republic, Finland, France, Hungary, Russia, Slovakia, Spain, Switzerland and the United Kingdom to press on with the creation of the ‘World Council of Nuclear Workers - WONUC’.
In the space of a few months, the representatives over 20 countries joined WONUC.
In September 1998, the 42th General Assembly of IAEA has recognized WONUC as a "Non Governemental Organisation - N.G.O."
In June 1999, WONUC organized the 1st International Conference on "The Effects of Low and very Low Doses of Ionizing Radiation on Human Health"at the University of Versailles - Saint Quentin en Yvelines, France
In October 2002, WONUC organized the 1st International Conference on "Nuclear desalination: Challenges and Options" at Marrakech (Morocco)
In April 2003, willing to emphasize its support for the peaceful use of Nuclear Energy, WONUC General Assembly added in its constitution (Aims of WONUC) the "Defence of the peaceful applications of nuclear energy and the promotion of non-proliferating nuclear technologies".