Ontario Severance

Arbitration — Ontario Employment Law

515 casesDecisions from 1942–2026

About Arbitration

What is arbitration in the context of Ontario employment law? Simply put, it's a way to resolve legal disputes outside of the public court system. Instead of a judge, a neutral third-party, known as an arbitrator, hears evidence from both the employee and the employer and makes a legally binding decision. For Ontario workers, arbitration typically arises in two distinct situations.

The first and most common is for unionized employees. Under the Ontario Labour Relations Act, 1995, disputes about the interpretation or application of a collective agreement must be resolved through a process called grievance arbitration. If you are a member of a union, this is almost always the exclusive forum for resolving workplace issues like discipline, termination, or seniority rights. You cannot simply sue your employer in court; your union must file a grievance on your behalf, which may ultimately proceed to arbitration if it cannot be settled.

The second situation involves non-unionized employees whose employment contracts contain an 'arbitration clause'. These clauses are becoming more frequent, especially in the tech sector and for senior-level positions. They require the employee to give up their right to sue in court and instead use private arbitration for any future disputes, such as a wrongful dismissal claim. While these clauses are often enforceable, their power is not absolute. For instance, courts have scrutinized whether certain claims, like systemic discrimination or issues under the Employment Standards Act, 2000 (ESA), can truly be forced into private arbitration. The specifics of your situation and the wording of the clause are critical, making a professional review of your legal options essential when a conflict arises.

Frequently Asked Questions

What's the difference between arbitration and mediation in an employment dispute?

In arbitration, a neutral arbitrator acts like a judge, hears evidence, and makes a final, binding decision. In mediation, a neutral mediator helps the employee and employer talk and try to reach a voluntary settlement, but the mediator has no power to impose a decision.

My employment contract has an arbitration clause. Does this mean I can't sue my employer in court?

Generally, yes. A valid arbitration clause in Ontario usually prevents you from filing a civil lawsuit for issues covered by the clause, like wrongful dismissal. However, the enforceability can be challenged, and it may not prevent you from filing claims with bodies like the Human Rights Tribunal or the Ministry of Labour.

I'm in a union. Can I choose to go to court instead of arbitration for a workplace issue?

Almost certainly not. For disputes covered by your collective agreement, such as discipline or termination, the grievance arbitration process governed by the Labour Relations Act, 1995 is your exclusive remedy. Your union would represent you in this process.

Can an arbitration clause stop me from filing a human rights complaint in Ontario?

This is a complex and evolving area of law. While a clause might try to force all disputes into arbitration, you generally retain the right to file an application with the Human Rights Tribunal of Ontario. Courts have shown reluctance to let private contracts completely block access to public human rights bodies.

Who pays for employment arbitration in Ontario?

In unionized grievance arbitration, the union and employer typically split the arbitrator's costs. In private arbitration resulting from a contract clause, the agreement itself often specifies how costs are divided, but it can be a significant expense for an individual.

Is an arbitrator's decision final?

Yes, an arbitrator's decision is legally binding and final. The grounds for appealing or challenging an arbitration award in court (a process called judicial review) are extremely limited and focus on procedural fairness, not on whether the arbitrator made the 'right' decision on the facts.

When should I get legal advice about an arbitration issue?

You should seek advice from an employment lawyer before signing any contract with an arbitration clause. It is also crucial to consult a lawyer if you have a dispute and your employer is trying to force you into arbitration, as they can explain the process, your rights, and the strategic implications.

Common Scenarios

  • A unionized nurse is fired, and their union files a grievance. When the hospital and union can't agree on a resolution, the matter is scheduled for a hearing before a neutral arbitrator.
  • A senior marketing director is terminated and wants to sue for wrongful dismissal, but their executive contract contains a clause requiring all disputes to be resolved through confidential, private arbitration.
  • A group of food delivery drivers attempts to launch a class-action lawsuit for employment standards violations, but the company files a motion to stay the lawsuit, arguing each driver's contract requires individual arbitration.
  • An employee in a non-union workplace experiences harassment and finds their employment agreement mandates arbitration for all disputes, creating uncertainty about whether to pursue arbitration or file a human rights claim.

What You Should Know

  • Before signing an employment contract, carefully read it to see if it contains an arbitration clause. Understand that this clause may limit your future right to go to court.
  • If you are a union member, familiarize yourself with the grievance and arbitration procedure in your collective agreement, as this is your primary path for resolving workplace disputes.
  • Even though arbitration can be less formal than court, evidence is still key. Meticulously document all events, communications, and facts related to your employment issue.
  • Understand that an arbitrator's decision is legally binding and very difficult to appeal. Unlike a court case, you likely won't get a second chance if you are unhappy with the outcome.
  • If your employer is invoking an arbitration clause to handle your termination or another dispute, consult with an Ontario employment lawyer immediately to assess the clause's validity and plan your strategy.

Featured Cases

D. v. Ontario

2026 ONCA 321 (CanLII) · 2026-05-06

D. v. Ontario: Charter Claims Struck for Arbitration

This is an appeal from a motion to strike where the Court of Appeal dismissed the appeal and struck the pleadings. The appellants, including unionized healthcare workers and privileged hospital staff, attempted to litigate vaccine policy disputes and privilege revocations in civil court. The court held that these matters fell under the exclusive jurisdiction of labour arbitration or statutory review bodies, striking the Charter and tort claims as an abuse of process.

abuse of process arbitration charter labour relations motion to strike

F. v. HUB International Limited

2026 ONCA 313 (CanLII) · 2026-05-04

Employment Contract: Option Dispute & Forum Selection

The Court of Appeal for Ontario dismissed an appeal concerning the interpretation of an employment agreement and option documents. The court determined that the Alternative Dispute Resolution (ADR) clause in the employment agreement did not govern the dispute over equity options, and enforced a Delaware forum selection clause despite allegations of unconscionability.

arbitration contract interpretation employment contract forum selection

S. v. Strada XR Limited et al

2026 ONSC 2837 (CanLII) · 2026-04-23

Employment Arbitration Stay: ESA Compliance

This is a procedural ruling on a motion to stay court proceedings in favor of arbitration under the Arbitration Act, 1991. The court addressed whether the arbitration clause in the employment contract was valid and enforceable, particularly regarding its compliance with the Employment Standards Act, 2000. The court granted the stay, finding the dispute fell within the arbitration agreement and that the clause did not contract out of ESA minimum requirements.

arbitration costs employment contract employment standards stay of proceedings

F. v. Newport Sports Management Inc. et al.

2026 ONSC 1373 (CanLII) · 2026-03-06

Arbitration Award Upheld: Labour Relations & Fairness

This is a procedural ruling on an application to set aside an arbitration award in a closed shop labour relations context. The court addressed issues of arbitrator jurisdiction, the validity of a six-month contractual limitation period, and procedural fairness regarding the arbitrator's consideration of NHLPA information.

arbitration labour relations limitation periods procedural fairness set aside award

Canada Post Corporation v. Canadian Postmasters and Assistants Association

2025 ONSC 6469 (CanLII) · 2025-12-05

This is a judicial review of a labour arbitration award regarding the interpretation of a collective agreement clause on the recovery of overpayments. The Divisional Court reviewed the application, finding the arbitrator's interpretation reasonable and affirming the arbitrator's flexibility in applying equitable doctrines like estoppel.

arbitration collective agreements judicial review labour relations overpayments

J.-M.D. v. The King (Ontario)

2025 ONSC 5828 (CanLII) · 2025-10-17

Workplace Discrimination: Jurisdiction & Arbitration Stay

This is an interlocutory proceeding addressing jurisdictional challenges and a motion to stay proceedings in a wrongful dismissal and discrimination case. The plaintiff, a non-unionized employee, alleged systemic anti-Black racism and misogynoir in the Ontario public service, seeking remedies under human rights law, workplace safety principles, and a novel public nuisance tort. The court denied the employer's request for a stay of proceedings, finding that the arbitration agreement was not binding on the plaintiff and that the court retained jurisdiction to hear claims outside the collective agreement scope.

arbitration human rights jurisdiction systemic racism workplace discrimination

2501373 Ontario Inc. et al. v. S. et al.

2025 ONSC 5216 (CanLII) · 2025-09-12

Arbitration Jurisdiction: Wrongful Dismissal in SPA

This is an appeal concerning an arbitration award where the arbitrator determined their jurisdiction over wrongful dismissal claims linked to a Share Purchase Agreement. The court addressed whether the arbitration agreement precluded appeals on questions of law and whether the arbitrator provided fair treatment to the parties.

appeal arbitration jurisdiction share purchase agreement wrongful dismissal

Canadian Broadcasting Corporation v. Canadian Media Guild et al.

2025 ONSC 4495 (CanLII) · 2025-08-01

Judicial Review of Labour Arbitration: Separation Allowance

This is a judicial review of a labour arbitration award concerning the calculation of a separation allowance under a collective agreement between the Canadian Broadcasting Corporation and the Canadian Media Guild. The Divisional Court examined whether the arbitrator's decisions on continuous service, disability-related leaves, and pro-rating were reasonable and procedurally fair.

arbitration collective agreements judicial review labour relations severance pay

D. v. Amazon Canada Fulfillment Services

2025 ONCA 421 (CanLII) · 2025-06-10

Appeal Dismissed in Amazon Class Action

Driver associates employed by third-party logistics companies sued Amazon Canada in a proposed class action, claiming it was a common employer. A motion judge previously denied certification, finding no common employer relationship and upholding arbitration agreements. The Ontario Court of Appeal dismissed the workers' appeal, agreeing that the claims against Amazon lacked common issues and could not proceed as a class action.

arbitration certification class action common employer driver associates

Metrolinx v. Amalgamated Transit Union, Local 1587

2025 ONCA 415 (CanLII) · 2025-06-06

Metrolinx v. ATU, Local 1587 (Appeal Dismissed)

The Court of Appeal for Ontario heard an appeal of a Divisional Court decision that had quashed an arbitration award reinstating employees dismissed for sexual harassment. The Court of Appeal dismissed the appeal, holding that the arbitrator's findings were unreasonable due to errors in principle and reliance on stereotypes. The Court also affirmed that the employer had a statutory duty under the Occupational Health and Safety Act to investigate the incidents even in the absence of a formal complaint.

arbitration judicial review labour relations ohsa sexual harassment

Canadian Union of Postal Workers v. Canada Post Corporation

2025 ONSC 2601 (CanLII) · 2025-05-13

The Canadian Union of Postal Workers sought judicial review of an arbitrator's decision that dismissed a grievance regarding the calculation of relief letter carrier positions under the collective agreement. The Divisional Court applied the reasonableness standard under Vavilov and upheld the arbitrator's decision, finding it internally coherent and justified.

arbitration collective agreements judicial review labour relations standard of review

F. v. Hub International Limited

2025 ONSC 7369 (CanLII) · 2025-05-01

Employment Contract: Arbitration vs Equity Dispute

This is an interlocutory proceeding determining whether a dispute over equity options falls under the arbitration clause of an employment agreement or a separate equityholders agreement. The court found no connection between the option dispute and the employment agreement, rendering the ADR clause inapplicable, and upheld the enforceability of the Delaware forum selection clause in the equityholders agreement.

arbitration employment contract equity agreements forum selection

A. et al v. A.

2025 ONSC 770 (CanLII) · 2025-02-03

Judicial Review of Arbitration Award in Employment Dispute

This is a judicial review application concerning the enforcement of an arbitral award related to disparagement and confidentiality provisions. The applicants sought to set aside the award under section 46 of the Arbitration Act, 1991, alleging breaches of natural justice, and sought to introduce fresh forensic accounting evidence.

arbitration confidentiality employment fresh evidence judicial review

V.D. v. Toronto Police Association

2025 ONSC 315 (CanLII) · 2025-01-14

Judicial 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.

arbitration duty of fair representation judicial review labour relations police association

F. et al v. Wrestling Canada Lutte et al

2024 ONSC 7196 (CanLII) · 2024-12-20

Termination Clause Interpretation: Appeal Allowed, Claim Struck

This is an appeal from a motion judge's decision regarding the interpretation of without cause termination and dispute resolution clauses. The Divisional Court allowed the appeal, finding the motion judge's findings inconsistent, and struck the claim because the termination was lawful and no dispute survived to be arbitrated under the Arbitration Act, 1991.

appeal arbitration contract interpretation dispute resolution termination

London Civic Employees Union Local 107 v. Corporation of the City of London et al

2024 ONSC 6625 (CanLII) · 2024-12-04

Paid Holiday Entitlement Under Collective Agreement

This is a judicial review application concerning a labour arbitrator's interpretation of a collective agreement regarding paid holiday entitlements for outside employees. The Divisional Court reviewed the arbitrator's decision under the Vavilov standard, particularly regarding the interpretation of a federal proclamation and the Bills of Exchange Act.

arbitration collective agreements judicial review labour relations paid holidays

Canadian Union of Postal Workers v. Canada Post Corporation

2024 ONSC 5924 (CanLII) · 2024-10-28

Judicial Review of Interlocutory Arbitral Award

This is a judicial review application concerning an interlocutory arbitral award in a labour dispute between a union and an employer. The Divisional Court declined to intervene, emphasizing the prematurity doctrine and the need to respect the arbitrator's expertise and the collective agreement's grievance process.

arbitration collective agreements judicial review labour relations prematurity

PUC Services Inc. v. Power Workers’ Union

2024 ONSC 5470 (CanLII) · 2024-10-03

This is a judicial review of an expedited labour arbitration award involving a dispute between PUC Services Inc. and the Power Workers’ Union. The Divisional Court upheld the arbitrator's procedural decisions and findings regarding the scope of protection for union representatives, dismissing the employer's application.

arbitration judicial review labour relations procedural fairness union representatives

Canadian Pacific Kansas City Railway v. Teamsters Canada Rail Conference

2024 ONSC 3901 (CanLII) · 2024-07-10

This is a judicial review of an arbitration award concerning a collective agreement between Canadian Pacific Kansas City Railway and Teamsters Canada Rail Conference. The Divisional Court applied a reasonableness review under Vavilov to determine if the arbitrator's interpretation of Article 16 and Auxiliary Board conditions regarding bargaining unit work was unreasonable. The court found no demonstrable unreasonleness in the arbitrator's analysis and dismissed the application.

arbitration bargaining unit collective agreements judicial review labour relations

Stratford (City) v. Stratford Professional Fire Fighters Ass’n Local 534

2024 ONSC 3693 (CanLII) · 2024-06-27

The Divisional Court reviewed an interest arbitration supplemental award. The court applied the Vavilov standard of reasonableness, finding that the arbitrator's clarification of the award and reliance on mediation communications were rational and did not breach settlement privilege or exceed jurisdiction.

arbitration functus officio judicial review labour relations standard of review