Union Discipline — Ontario Employment Law
Related Keywords
About Union Discipline
In Ontario's organized workplaces, disciplinary action does not always originate from the employer. Labour unions themselves possess the authority to discipline their own members, an area of law distinct from standard workplace discipline. When a worker joins a union, they become bound by the union's constitution and bylaws. In the eyes of the law, a union's constitution operates as a legally binding contract between the union and its members. If a member breaches these rules—for example, by crossing a picket line during a lawful strike, actively undermining the union's bargaining position, or failing to pay required dues—the union can initiate internal disciplinary proceedings.
Union discipline typically involves an internal tribunal or hearing process conducted by union executives or designated committees. While these are not formal courts of law, they are nonetheless required to adhere to the principles of natural justice and procedural fairness. This means an accused union member has the right to know the precise nature of the allegations against them, to review the evidence being relied upon, and to have a fair opportunity to present a defence before an unbiased decision-maker.
A central feature of this area of law is the issue of jurisdiction. When a member feels they have been treated unfairly during a disciplinary process, their first instinct might be to file a lawsuit in civil court. However, Ontario courts are highly reluctant to intervene in internal union affairs. Under the Ontario Labour Relations Act (LRA) and equivalent federal legislation like the Canada Labour Code, labour boards generally maintain exclusive jurisdiction over disputes arising from union constitutions and internal discipline. Courts will typically only step in if there is a severe breach of natural justice, evidence of bad faith, or if the member has already entirely exhausted the union's internal appeal mechanisms without relief.
Penalties imposed by unions can include hefty financial fines, suspension of right to attend meetings, or even outright expulsion from the union. Because navigating the fine line between your obligations to the union and your rights as a worker is highly complex, relying on the union for guidance during these disputes is a conflict of interest. Getting an independent legal perspective from outside counsel is critical if you are facing union charges.
Frequently Asked Questions
Can my union legally fine me if I cross a picket line to go to work?
Yes. If an authorized strike is called and the union's constitution or bylaws explicitly prohibit members from working during a strike, crossing the picket line is a breach of that contract. The union can hold internal hearings and issue fines against you, which courts will often uphold and enforce.
What basic rights do I have during an internal union trial?
Even though it is an internal process, unions must follow the legal principles of natural justice. You have the right to receive adequate notice of the charges against you, a fair opportunity to review the evidence, and the chance to respond to the allegations before an impartial panel.
Will I automatically lose my job if the union expels me?
Not necessarily. While some workplaces have "closed shop" rules requiring union membership as a condition of employment, the Ontario Labour Relations Act prevents an employer from firing you solely because the union expelled you for certain protected reasons, such as reasonably dissenting against union leadership.
Can I sue my union in regular court if the internal tribunal treats me unfairly?
Generally, no. Ontario courts and labour boards require you to exhaust all internal union appeal processes first. Even then, regular courts usually defer jurisdiction to the Ontario Labour Relations Board (OLRB) unless there is a fundamental breach of procedural fairness that falls outside the statutory scheme.
Can my union discipline me for criticizing its leadership on social media?
It is possible. If a union's constitution contains provisions against "bringing the union into disrepute" or engaging in anti-union conduct, public criticism could trigger internal charges. However, these provisions must be balanced against basic democratic freedoms within the union.
When should I consult an independent lawyer during a union dispute?
You should speak to independent legal counsel the moment you receive notice of internal union charges. Because your regular union representative is accountable to the union itself, they cannot neutrally defend you against the organization that employs them.
Common Scenarios
- A member disagrees with a strike vote, decides to continue working while their colleagues picket, and later receives an internal union summons demanding thousands of dollars in penalties for "scabbing."
- A vocal employee who is running for a local union executive position publishes a blog post criticizing the current leadership, prompting the executives to file sudden disciplinary charges to suspend the worker's membership right before the election.
- A union tribunal suspends a member for alleged misconduct, but the member was never provided with the witness statements or evidence against them prior to the hearing, raising serious issues of procedural unfairness.
- A worker is fined by their union and refuses to pay; the union then pursues collections and takes the worker to civil court in Ontario claiming the fine is an enforceable contractual debt under the union's constitution.
What You Should Know
- Obtain a current copy of your union's constitution and local bylaws immediately so you can verify exactly what rules you are accused of violating.
- Document every step of the disciplinary process, paying close attention to whether the people accusing you are the same ones sitting on the decision-making panel, which could indicate illegal bias.
- Do not skip the union's internal appeal steps; Labour boards will almost always refuse to hear your complaint if you have not exhausted the union's internal remedies first.
- Do not ignore notices of internal union trials or fines, as unions frequently take unpaid fines to civil court or a collection agency to force payment.
Featured Cases
B. v. Public Service Alliance Of Canada et al
2026 ONSC 4761 (CanLII) · 2026-08-17This is an interlocutory proceeding addressing subject matter jurisdiction in a labour relations dispute. The court dismissed the action, finding that the Labour Board has exclusive jurisdiction over the union's internal disciplinary process and allegations of procedural unfairness under the Federal Public Sector Labour Relations Act.
D. v. The International Alliance of Theatrical Stage Employees, 2018
2018 ONSC 6934 (CanLII) · 2018-11-20This is a procedural ruling granting summary judgment to dismiss a union member's claim against their union for breach of contract and procedural unfairness related to disciplinary proceedings. The court found no genuine issue requiring a trial, determining that breaches of the union's internal constitution did not justify judicial intervention absent proof of procedural unfairness or bias.
C. v. International Brotherhood of Electrical Workers, Local 353
2014 ONSC 4558 (CanLII) · 2014-08-01Union Discipline: Procedural Fairness & Summary Judgment
This is a procedural ruling on a summary judgment application brought by a union member against their union regarding internal disciplinary proceedings. The court dismissed the application, finding that the union tribunal provided adequate procedural fairness, did not breach its constitution, and acted without bad faith. The court awarded substantial indemnity costs to the union.
Universal Workers Union (Labourers' International Union of North America, Local 183) v. F.
2009 ONCA 155 (CanLII) · 2009-02-19Union Discipline vs Arbitration: CA Ontario
This appeal addresses whether internal union disciplinary hearings conducted by an independent hearing officer constitute arbitration under the Arbitration Act, 1991, and whether such decisions can be enforced as arbitration awards. The Court of Appeal for Ontario held that internal disciplinary matters do not constitute 'disputes' under the Act and that no express or implied arbitration agreement exists within the union constitution.
B. v. Union of Taxation Employees Local 70030
2007 CanLII 43894 (ON SC) · 2007-10-17Union Fines Unenforceable: Penalty Clause Analysis
This is a procedural and substantive ruling regarding whether courts should enforce union fines levied against members for breaching strike obligations. The court examined whether the fines constituted unenforceable penalty clauses under contract law, whether they were unconscionable, and whether the union had statutory authority to impose such fines.
P. v. Canadian Union of Postal Workers
2005 CanLII 14323 (ON SC) · 2005-05-03Union Discipline: CIRB Exclusive Jurisdiction
This is a jurisdictional ruling determining whether the Canada Industrial Relations Board (CIRB) has exclusive authority over internal union disputes under the Canada Labour Code. The court held that the comprehensive statutory scheme precludes court jurisdiction over claims involving union discipline, including allegations of improper motives and breach of natural justice by union executives.
D. v. L.
2004 CanLII 34927 (ON SC) · 2004-10-13Union Discipline & Defamation: Issue Estoppel Ruling
This is a procedural ruling on a motion to strike pleadings in a defamation action involving union members. The court addressed whether the Labour Relations Act ousted civil court jurisdiction and whether issue estoppel applied due to prior union discipline proceedings. The motion to strike was granted as the defences were found irrelevant or incapable of supporting the raised issues.
Re R. and United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada, Local 527
1983 CanLII 1916 (ON SC) · 1983-07-15Judicial Review of Union Discipline
This is a judicial review application concerning the disciplinary suspension and fining of a union member by a local executive board. The court addressed whether non-statutory, unincorporated union tribunals are subject to judicial review and bound by the rules of natural justice, as well as procedural questions regarding parties and alternative remedies.