South Dakota Codified Laws
Chapter 09A - Collective Bargaining
Section 60-9A-14 - Closed shop and agency shop contracts not authorized.

60-9A-14. Closed shop and agency shop contracts not authorized.
Nothing in this chapter shall be construed as authorizing the execution or application of agreements requiring membership in a labor organization or requiring the payment of fees or contributions of any kind whatsoever in lieu of membership to a labor organization as a condition of employment.

Source: SL 1974, ch 323, ยง14.