60-8-3, et seq.; 60-10-10; Art. VI §2 South Dakota Constitution
The right of persons to work shall not be denied or abridged on account of membership or nonmembership in a labor union or organization.
Any agreement relating to employment denying free exercise of right to work; any coercion to enter into such agreement; coercion of employee to join union; interference with right to work by use of force or violence.
Class 2 misdemeanor; thirty days imprisonment in county jail or $100 fine or both. (22-6-2)