Duty of Fair Representation — Ontario Employment Law
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About Duty of Fair Representation
In unionized workplaces in Ontario, employees generally lose the right to sue their employers directly in civil court for most employment-related disputes. Instead, the union acts as the exclusive bargaining agent and handles disputes through the grievance and arbitration process. Because the union holds this immense power over a worker's livelihood, section 74 of Ontario's Labour Relations Act, 1995 (LRA) imposes a mandatory statutory obligation known as the "duty of fair representation" (DFR).
Under this duty, a union must not act in a manner that is arbitrary, discriminatory, or in bad faith when representing any of the employees in its bargaining unit.
"Arbitrary" conduct typically involves a union acting with reckless disregard for an employee's interests, conducting a superficial investigation, or simply tossing a grievance aside without looking into it. "Discriminatory" conduct means treating a member differently based on personal characteristics (such as those protected by the Ontario Human Rights Code) or union politics. Finally, "bad faith" involves deceit, malice, or personal hostility directed at the worker.
A frequent misconception among unionized workers is that the duty of fair representation requires the union to take every single grievance to arbitration. In reality, unions have "carriage" of grievances, meaning they possess the legal right to settle, compromise, or even withdraw a grievance. As long as the union undertakes a meaningful investigation, considers the relevant facts, and makes a reasoned decision that the grievance lacks merit or is too costly relative to the benefit, it is unlikely to have breached its duty.
Crucially, as established by extensive case law, disputes regarding union representation and alleged breaches of the DFR fall under the exclusive jurisdiction of the Ontario Labour Relations Board (OLRB) for provincially regulated employees, or the Canada Industrial Relations Board (CIRB) for federal workers. When dissatisfied workers try to bypass the labour boards by suing their union representatives or union lawyers in Ontario Superior Court for negligence or breach of contract, judges almost universally dismiss these lawsuits for lack of jurisdiction.
Navigating a dispute with your own bargaining agent presents unique challenges. Because evaluating a union's investigatory standard relies on highly specific factual contexts, retaining independent legal counsel to review the union's actions is often a vital step for employees feeling abandoned by their representatives.
Frequently Asked Questions
Does my union have to take my grievance to arbitration if I demand it?
No. The union owns the grievance process, not the individual employee. The duty of fair representation allows the union to drop or settle your grievance, provided they investigate the matter properly and their decision is not arbitrary, discriminatory, or made in bad faith.
Can I sue my union representative in court for negligence?
Generally, no. Ontario courts routinely dismiss civil lawsuits against unions or union lawyers for negligent representation because the Ontario Labour Relations Board (OLRB) has exclusive jurisdiction over these matters. You must file a Duty of Fair Representation complaint with the appropriate labour board instead.
What does it mean if a union acts "arbitrarily"?
Arbitrary conduct happens when a union acts with reckless disregard for an employee's interests. Examples include failing to investigate a serious complaint, missing crucial filing deadlines due to sheer carelessness, or making a decision about a grievance based on a superficial review of the facts.
How long do I have to file a duty of fair representation complaint in Ontario?
While the Labour Relations Act does not state a strict expiry date for DFR complaints, the OLRB expects them to be filed promptly. The Board routinely dismisses complaints due to "unreasonable delay" if an employee waits too long—often just a few months—without a very compelling excuse.
What happens if the OLRB finds that my union breached its duty?
The OLRB has broad remedial powers. If a breach is found, the Board may order the union to bring the grievance to arbitration, waive relevant time limits in the collective agreement, or order the union to pay for independent legal counsel to represent the employee at the arbitration hearing.
Can I hire my own lawyer to file a complaint against my union?
Yes. While you cannot bring your own lawyer to a standard union grievance meeting against the union's wishes, you have every right to hire independent legal counsel to advise you on a DFR complaint and represent you in front of the OLRB against your union.
Common Scenarios
- A union steward harbours personal animosity toward an employee who previously campaigned for a rival union leader, leading the steward to intentionally "forget" to file the employee's termination grievance before the collective agreement's strict deadline expires.
- After an employee is denied overtime pay, the union investigates the claim, gets a legal opinion that the collective agreement does not support the grievance, and subsequently withdraws it, prompting the employee to incorrectly claim a breach of fair representation.
- A frustrated worker attempts to sue their union's legal counsel in civil court for botching an accommodation request, only to have the judge throw the lawsuit out because the dispute belongs exclusively before the labour tribunal.
- A union executive superficially reviews a complex medical file regarding an employee's long-term disability denial, spending only three minutes before rejecting the grievance, which later leads the OLRB to find the union's conduct was unacceptably arbitrary.
What You Should Know
- Always maintain a detailed, chronological paper trail of all your communications with union representatives, including follow-up emails confirming what was discussed during phone calls.
- If your union informs you that they will not be advancing your grievance to the next step, formally request that they provide their reasons in writing.
- Do not waste resources trying to bypass the labour board by suing your union for negligence in civil court, as jurisdictional rules will likely result in your case being dismissed with costs awarded against you.
- If you believe your union is failing you, promptly seek a consultation with an independent employment lawyer who has specific experience dealing with labour relations tribunals to evaluate if you have grounds for a Section 74 complaint.
Featured Cases
W. v. Ontario Labour Relations Board et al
2026 ONSC 2580 (CanLII) · 2026-05-04Judicial Review: Duty of Fair Representation & Union Bias
This is a judicial review application concerning the Ontario Labour Relations Board's decision to dismiss a duty of fair representation application. The Divisional Court reviewed whether the Board acted reasonably under the Vavilov standard regarding the union's withdrawal of a grievance, alleged bias, and sufficiency of reasons. The application for judicial review was dismissed.
M. v. Ontario (Labour Relations Board)
2025 ONSC 6792 (CanLII) · 2025-12-16Judicial Review: Duty of Fair Representation OLRB
This is a judicial review application concerning the Ontario Labour Relations Board's decision on the duty of fair representation. The Divisional Court applied the Vavilov reasonableness standard to assess whether the OLRB reasonably found no breach of s. 74 of the Labour Relations Act, 1995, and whether the reconsideration decision was justified despite a factual error.
M. v. OLRB et al.
2025 ONSC 6323 (CanLII) · 2025-11-17Judicial Review: OLRB Procedural Fairness and Duty of Fair Representation
A judicial review application challenging the Ontario Labour Relations Board's decisions regarding procedural fairness, statutory interpretation, the union's duty of fair representation, and allegations of bias. The Divisional Court applied the presumptive standard of reasonableness and upheld the OLRB's findings that the board's processes were fair, its statutory interpretations were reasonable, the union acted without arbitrariness, and there was no reasonable apprehension of bias.
J. v. Ontario Labour Relations Board
2025 ONSC 6105 (CanLII) · 2025-10-31Judicial Review: Duty of Fair Representation Complaint
A judicial review application challenging the Ontario Labour Relations Board's dismissal of a Duty of Fair Representation complaint and the subsequent reconsideration request. The applicant alleged the union mishandled grievances and that the Board's process was unfair, raising issues regarding the standard of review, admissibility of new affidavit evidence, and the union's discretion in settling grievances.
G. v. C. and CSCNO
2025 ONSC 4902 (CanLII) · 2025-08-26This is a motion to strike and leave to amend proceeding concerning the jurisdiction of the court over employment-related claims. The plaintiff, whose employment was governed by a collective agreement, sought to challenge her termination and alleged a breach of the duty of fair representation by the union. The court determined that disputes arising from collective agreements and claims regarding the duty of fair representation fall under the exclusive jurisdiction of labour tribunals, such as the Ontario Labour Relations Board, rather than the courts.
G. v Ontario Teacher’s Pension Plan
2025 CanLII 150914 (ON SCSM) · 2025-08-25This is a procedural ruling on a motion to strike where the court determined it lacked jurisdiction over disputes arising from a collective agreement and the duty of fair representation. The court held that such matters fall under the exclusive mandate of the Ontario Labour Relations Board, citing Weber v. Ontario Hydro, and struck the claims against the union counsel and the pension plan.
M. v. OLRB and McMaster University
2025 ONSC 2224 (CanLII) · 2025-06-04Judicial Review: Extension of Time for Labour Dispute
This is a judicial review proceeding concerning the Ontario Labour Relations Board's dismissal of a complaint alleging a union's failure to provide a duty of fair representation in an employment dispute. The court addressed a procedural motion to extend the time limit for filing the judicial review application, considering the moving party's medical conditions and the reasons for the three-year delay.
G. v. Unifor Local 40
2025 ONSC 669 (CanLII) · 2025-02-03Judicial Review: Union Duty of Fair Representation
This is a judicial review of a decision by the Ontario Labour Relations Board concerning an applicant's allegation that Unifor Local 40 breached its duty of fair representation. The Divisional Court applied a reasonableness standard of review to the Board's decision that the union acted within its discretion by pursuing a policy grievance rather than filing an individual one.
V.D. v. Toronto Police Association
2025 ONSC 315 (CanLII) · 2025-01-14Judicial Review: Duty of Fair Representation Police Association
This is a judicial review of an arbitrator's decision dismissing a duty of fair representation complaint brought against the Toronto Police Association. The applicant alleged the Association acted arbitrarily and discriminatorily by not grieving the termination of employment and withdrawal of benefits. The Divisional Court applied the Vavilov framework to consider whether the arbitrator's decision was reasonable, noting the arbitrator's findings of no breach of the duty of fair representation and no bias.
M. v. Ontario Labour Relations Board
2024 ONSC 5048 (CanLII) · 2024-09-11Judicial Review: LRD Dismissal for Delay
The Divisional Court dismissed an application for judicial review of the Ontario Labour Relations Board's decision to dismiss a duty of fair representation application due to lengthy delay. The Court upheld the Board's exercise of discretion, finding that the delay was presumptively prejudicial and that the Board's approach to case management was reasonable.
M. v. Ontario Labour Relations Board
2024 ONSC 2559 (CanLII) · 2024-05-03Judicial Review Prematurity: OLRB Decisions
This is a judicial review proceeding concerning the prematurity of an application to review Ontario Labour Relations Board (OLRB) decisions regarding employment disputes. The court addressed whether the judicial review should proceed while one OLRB application remained ongoing, applying the principle that such reviews are generally premature unless exceptional circumstances exist. The court adjourned the judicial review application pending the final OLRB decision.
L. v. Ontario Labour Relations Board
2024 ONSC 1253 (CanLII) · 2024-02-29Judicial Review: Duty of Fair Representation & Extension of Time
This is a judicial review application concerning the Ontario Labour Relations Board's dismissal of a complaint alleging a union failed in its duty of fair representation. The applicant sought an extension of time to file a motion to set aside a motion judge's decision, which had previously denied an extension of time for the judicial review. The court addressed issues regarding the standard of review for discretionary decisions, the admissibility of fresh evidence, and the merit of the underlying application.
W. v. C.
2024 ONSC 728 (CanLII) · 2024-02-02This is a labour relations case concerning the union's duty of fair representation in grievance arbitration. The dispute arises from the interpretation of collective agreements and the conduct of unions in representing employees.
J. v. Ontario Secondary School Teachers’ Federation
2023 ONSC 59 (CanLII) · 2023-01-05Judicial Review: Union Duty of Fair Representation
This is a judicial review application concerning the Ontario Labour Relations Board's dismissal of a complaint against the Ontario Secondary School Teachers’ Federation for breach of the duty of fair representation. The Divisional Court assessed the reasonableness of the Board's decisions regarding summary dismissal for delay and failure to establish a prima facie case.
L. v. Unifor Local 414
2022 ONSC 945 (CanLII) · 2022-02-11Judicial Review: Union Duty of Fair Representation & WSIB
This is a judicial review of a Labour Relations Board decision regarding a union's duty of fair representation and its refusal to assist with a Workers' Safety and Insurance Board (WSIB) matter. The Divisional Court applied the Vavilov standard of reasonableness and found the Board's decision to terminate the application was defensible in both fact and law. The Court also found no procedural unfairness in the Board's handling of the matter and rejected Charter claims due to a lack of evidentiary basis.
A. v. Ontario Public Service Employees Union
2022 ONSC 785 (CanLII) · 2022-02-03The applicant sought judicial review of the Ontario Labour Relations Board's dismissal of a duty of fair representation complaint as premature and an abuse of process. The Divisional Court upheld the Board's decision, finding it reasonable and procedurally fair under the Vavilov standard.
G. v. United Steelworkers Local 9350
2021 ONSC 7787 (CanLII) · 2021-11-26Judicial Review: Union DFR Timeliness Dismissed
This is a judicial review of a Labour Relations Board decision regarding a union's duty of fair representation and the timeliness of an application under the Labour Relations Act, 1995. The Divisional Court dismissed the application for judicial review, finding the Board's decisions on delay and reconsideration reasonable under Vavilov.
T. v. United Food
2021 ONSC 3015 (CanLII) · 2021-04-23Judicial Review: OLRB Dismissal of Union Complaint
This proceeding concerned the Divisional Court's decision upholding the Ontario Labour Relations Board's decision to dismiss the applicant's complaint against her union. The OLRB had dismissed the complaint due to an 11.5-month delay in filing and found no new material facts to warrant reconsideration. The Court applied the reasonableness standard of review, deferring to the OLRB's expertise in procedural labour relations matters.
T. v. Toronto
2021 ONSC 250 (CanLII) · 2021-01-12Union Duty of Fair Representation: Judicial Review Standing
An individual employee applied for judicial review of a labour arbitration award, alleging the union breached its duty of fair representation by acting arbitrarily, discriminatorily, and in bad faith. The Divisional Court addressed whether the Ontario Labour Relations Board has exclusive jurisdiction over such complaints and whether an individual employee has standing to seek judicial review outside the exclusive representation model.
R.S. v. Canadian Union of Postal Workers
2020 ONSC 5687 (CanLII) · 2020-09-21Union Duty of Fair Representation: Exclusive Jurisdiction
This is a procedural ruling dismissing an action where the plaintiff alleged the union and its lawyer conspired to discriminate against him during grievance proceedings. The court determined that the Canada Industrial Relations Board has exclusive jurisdiction over duty of fair representation claims, that the lawyer owed no private duty of care, and that the claim was statute-barred and an abuse of process.