Wisconsin Code § 111.84

Unfair labor practices
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(1) It is an unfair labor
practice for an employer individually or in concert with others:
(a) To interfere with, restrain or coerce employees in the exercise of their rights guaranteed in s. 111.82.
(b) Except as otherwise provided in this paragraph, to initiate,
create, dominate or interfere with the formation or administration
of any labor or employee organization or contribute financial
support to it. Except as provided in ss. 40.02 (22) (e) and 40.23
(1) (f) 4., no change in any law affecting the Wisconsin retirement
system under ch. 40 and no action by the employer that is authorized by such a law constitutes a violation of this paragraph unless an applicable collective bargaining agreement covering a collective bargaining unit under s. 111.825 (1) (g) specifically prohibits the change or action. No such change or action affects the
continuing duty to bargain collectively with a collective bargaining unit under s. 111.825 (1) (g) regarding the Wisconsin retirement system under ch. 40 to the extent required by s. 111.91 (1).
It is not an unfair labor practice for the employer to reimburse an
employee at his or her prevailing wage rate for the time spent during the employee’s regularly scheduled hours conferring with the
employer’s officers or agents and for attendance at commission or
court hearings necessary for the administration of this subchapter. Professional supervisory or craft personnel may maintain
membership in professional or craft organizations; however, as
members of such organizations they shall be prohibited from
those activities related to collective bargaining in which the organizations may engage.
(c) To encourage or discourage membership in any labor organization by discrimination in regard to hiring, tenure or other
terms or conditions of employment. This paragraph does not apply to fair-share or maintenance of membership agreements.

(d) To refuse to bargain collectively on matters set forth in s.
111.91 (1) or (3), whichever is appropriate, with a representative
of a majority of its employees in an appropriate collective bargaining unit. Where the employer has a good faith doubt as to
whether a labor organization claiming the support of a majority
of its employees in appropriate collective bargaining unit does in
fact have that support, it may file with the commission a petition
requesting an election as to that claim. It is not deemed to have
refused to bargain until an election has been held and the results
thereof certified to it by the commission. A violation of this
paragraph includes, but is not limited to, the refusal to execute a
collective bargaining agreement previously orally agreed upon.
(e) To violate any collective bargaining agreement previously
agreed upon by the parties with respect to wages, hours and conditions of employment affecting employees, including an agreement to arbitrate or to accept the terms of an arbitration award,
where previously the parties have agreed to accept such award as
final and binding upon them.
(f) To deduct labor organization dues from the earnings of a
public safety employee, unless the employer has been presented
with an individual order therefor, signed by the public safety employee personally, and terminable by at least the end of any year
of its life or earlier by the public safety employee giving at least
30 but not more than 120 days’ written notice of such termination
to the employer and to the representative labor organization, except if there is a fair-share or maintenance of membership agreement in effect. The employer shall give notice to the labor organization of receipt of such notice of termination.
(g) To use any moneys received for any purpose to discourage,
to train any supervisor, management employee, or other employee to discourage, or to contract with any person for the purposes of discouraging, employees in the exercise of their rights
guaranteed under s. 111.82.
(2) It is an unfair labor practice for an employee individually
or in concert with others:
(a) To coerce or intimidate an employee in the enjoyment of
the employee’s legal rights, including those guaranteed under s.
111.82.
(b) To coerce, intimidate or induce any officer or agent of the
employer to interfere with any of the employer’s employees in the
enjoyment of their legal rights including those guaranteed under
s. 111.82 or to engage in any practice with regard to its employees
which would constitute an unfair labor practice if undertaken by
the officer or agent on the officer’s or agent’s own initiative.
(c) To refuse to bargain collectively on matters set forth in s.
111.91 (1) or (3), whichever is appropriate, with the duly authorized officer or agent of the employer which is the recognized or
certified exclusive collective bargaining representative of employees specified in s. 111.81 (7) (a) in an appropriate collective
bargaining unit or with the certified exclusive collective bargaining representative of employees specified in s. 111.81 (7) (ar) to
(f) in an appropriate collective bargaining unit. Such refusal to
bargain shall include, but not be limited to, the refusal to execute
a collective bargaining agreement previously orally agreed upon.
(d) To violate the provisions of any written agreement with respect to terms and conditions of employment affecting employees, including an agreement to arbitrate or to accept the terms of
an arbitration award, where previously the parties have agreed to
accept such awards as final and binding upon them.
(e) To engage in, induce or encourage any employees to engage in a strike, or a concerted refusal to work or perform their
usual duties as employees.
(f) To coerce or intimidate a supervisory employee, officer or
agent of the employer, working at the same trade or profession as
the employer’s employees, to induce the person to become a
member of or act in concert with the labor organization of which
the employee is a member.
(3) It is an unfair labor practice for any person to do or cause
to be done on behalf of or in the interest of employers or employees, or in connection with or to influence the outcome of any controversy as to employment relations, any act prohibited by sub.
(1) or (2).
(4) Any controversy concerning unfair labor practices may be
submitted to the commission as provided in s. 111.07, except that
the commission shall fix hearing on complaints involving alleged
violations of sub. (2) (e) within 3 days after filing of such complaints, and notice shall be given to each party interested by service on the party personally, or by telegram, advising the party of
the nature of the complaint and of the date, time and place of
hearing thereon. The commission may in its discretion appoint a
substitute tribunal to hear unfair labor practice charges by either
appointing a 3-member panel or submitting a 7-member panel to
the parties and allowing each to strike 2 names. Such panel shall
report its finding to the commission for appropriate action.

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