Wis. Stat. § 134.03: Preventing pursuit of work.

Any person who by threats, intimidation, force or coercion of any kind shall hinder or prevent any other person from engaging in or continuing in any lawful work or employment, either for himself or herself or as a wage worker, or who shall attempt to so hinder or prevent shall be punished by fine not exceeding $100 or by imprisonment in the county jail not more than 6 months, or by both fine and imprisonment in the discretion of the court. Nothing herein contained shall be construed to prohibit any person or persons off of the premises of such lawful work or employment from recommending, advising or persuading others by peaceful means to refrain from working at a place where a strike or lockout is in progress.