On foundation, it had 9,372 members and by 1959 had grown to 38,053. The Swedish Tobacco Industry Workers' Union joined in 1964, followed by the Swedish Brewery Industry Workers' Union in 1965, and the dairy workers' section of the Swedish Commercial Employees' Union in 1968.
At its inception, the organization had a membership of 9,372 individuals, which increased to 38,053 by 1959. The Swedish Tobacco Industry Workers' Union joined in 1964, and was subsequently followed by the Swedish Brewery Industry Workers' Union in 1965, as well as the dairy workers' section of the Swedish Commercial Employees' Union in 1968.