It shall not be unlawful for workers to organize themselves into, or carry on, labor unions for the purpose of lessening the hours of labor or increasing the wages or bettering the conditions of the members of such organizations or carrying out their legitimate purposes as freely as they could do if acting singly.
Minn. Stat. § 185.01
(4255) 1917 c 493 s 1; 1986 c 444