It is an unfair labor practice for an employer:
The violation of clause (2), (4), (5), (6), (7), (8), or (9) is an unlawful act.
Minn. Stat. § 179.12
(4254-32) 1939 c 440 s 12; 1941 c 469 s 8; 1955 c 669 s 1; 1973 c 149 s 2; 1986 c 444; 1991 c 239 s 1; 1999 c 86 art 1 s 44