TENNESSEE Volkswagen workers have voted overwhelmingly to unionise following a campaign across the United States to address non-union plants.

In a landslide win, with over 83 per cent of workers taking part, 73 per cent voted for representation by the United Autoworkers Union (UAW).

It makes the Chattanooga factory the first non-union auto plant in the southern US to vote for unionisation since the 1940s, and the first international auto company to do so.