Ontario Labour Relations Act Protection of witnesses rights 87.(2) No trade union, council of trade unions or person acting on behalf of a trade union or council of trade unions shall, (a) discriminate against a person in regard to employment or a term or condition of employment; or (b) intimidate or coerce or impose a pecuniary or other penalty on a person, because of a belief that the person may testify in a proceeding under this Act or because the person has made or is about to make a disclosure that may be required in a proceeding under this Act or because the person has made an application or filed a complaint under this Act or has participated in or is about to participate in a proceeding under this Act. 1995, c. 1, Sched. A, s. 87.