[Armorer-at-Law]

Are you sure the immunity is not for actions of the CC?

The person employer may have liability for other reasons or based on arguments other than the decision not to prohibit CC. See the language of the WI statute:

• A person who does not prohibit an individual from carrying a concealed weapon on property that the person owns or occupies is immune from any liability arising from his or her decision. Wis. Stat. § 175.60(21)(b).
• An employer who does not prohibit one or more employees from carrying a concealed weapon is immune from any liability arising from that decision. Wis. Stat. § 175.60(21)(c).