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 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.