Wisconsin Statutes State Employment Relations (Ch. 230) § 230.81. Employee disclosure

(1) An employee with knowledge of information the disclosure of which is not expressly prohibited by state or federal law, rule or regulation may disclose that information to any other person. However, to obtain protection under s. 230.83, before disclosing that information to any person other than his or her attorney, collective bargaining representative or legislator, the employee shall do either of the following:

(2) Nothing in this section prohibits an employee from disclosing information to an appropriate law enforcement agency, a state or federal district attorney in whose jurisdiction the crime is alleged to have occurred, a state or federal grand jury or a judge in a proceeding commenced under s. 968.26, or disclosing information pursuant to any subpoena issued by any person authorized to issue subpoenas under s. 885.01. Any such disclosure of information is a lawful disclosure under this section and is protected under s. 230.83.

(3) Any disclosure of information by an employee to his or her attorney, collective bargaining representative or legislator or to a legislative committee or legislative service agency is a lawful disclosure under this section and is protected under s. 230.83.