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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Workers’ Compensation (WSIB) Ontario » Filing a Notice of Constitutional Question at the WSIAT in Ontario

Filing a Notice of Constitutional Question at the WSIAT in Ontario

29 Jun 2026 5 min read No comments Workers’ Compensation (WSIB) Ontario
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If you are arguing that a specific policy or section of the Workplace Safety and Insurance Act violates the Canadian Charter of Rights and Freedoms, you must file a Notice of Constitutional Question. This highly complex document must be served to the WSIAT and the Attorneys General of Ontario and Canada at least 15 days before your hearing, requiring specialized legal representation.

The vast majority of appeals at the Workplace Safety and Insurance Appeals Tribunal (WSIAT) revolve around medical facts, such as whether a back injury occurred at work or if a worker is ready to return to light duties. 📍 However, in rare and complex cases, an injured worker from Toronto, London, or Sudbury might find that their claim is denied not because of a lack of medical evidence, but because a specific section of the law itself is fundamentally unfair. When a rule within the Workplace Safety and Insurance Act (WSIA) discriminates against a worker based on age, mental disability, or another protected ground, challenging that law requires invoking the ultimate legal authority: the Canadian Charter of Rights and Freedoms.

The WSIAT has the unique administrative authority to determine whether sections of the WSIA violate the Charter. For example, previous constitutional challenges successfully struck down WSIB policies that discriminated against workers with mental health injuries compared to those with physical injuries. Bringing a Charter challenge is not a standard appeal; it is high-level litigation. The province of Ontario does not want its laws overturned easily. You must formally notify the highest levels of government that you intend to challenge their legislation by filing a Notice of Constitutional Question (NCQ). Attempting this without a highly experienced workers’ compensation lawyer or constitutional litigator is almost guaranteed to fail.

Step-by-Step Process for a Constitutional Challenge at WSIAT

Challenging the legality of a provincial statute involves incredibly strict procedural rules under the Courts of Justice Act. 📋 If your lawyer believes your WSIB denial violates your Charter rights, they will follow these rigorous steps.

Step 1: Identifying the Charter Breach

First, your legal counsel must pinpoint exactly how the WSIA violates the Charter. Most WSIAT constitutional challenges rely on Section 15 of the Charter, which guarantees equal protection and benefit of the law without discrimination. Your lawyer will draft a comprehensive legal memorandum explaining how a specific WSIB policy creates an adverse and discriminatory impact on you (and others like you) that cannot be justified in a free and democratic society.

Step 2: Drafting the Notice of Constitutional Question

The Notice of Constitutional Question is a formal, mandatory legal document. It must clearly state the specific section of the WSIA being challenged, the specific section of the Charter being violated, and the material facts supporting your argument. It must also outline the legal remedy you are seeking-usually a declaration that the offending section of the WSIA is of “no force or effect” in your specific case, forcing WSIB to grant your benefits.

Step 3: Serving the Attorneys General

You cannot just hand this document to the WSIAT Vice-Chair on the day of your hearing. By law, the Notice must be officially served to both the Attorney General of Ontario and the Attorney General of Canada. This must be done at least 15 days before the scheduled hearing. This notice period gives the government lawyers the opportunity to intervene in your case and defend the legislation against your attack.

Step 4: Arguing the Case at the WSIAT Hearing

Constitutional hearings at the Tribunal are extensive. They often involve expert witnesses, sociologists, and medical professionals who testify about the broad, systemic impacts of the challenged law. If the Attorneys General choose to intervene, your lawyer will be arguing not only against the WSIB’s lawyers but also against top government litigators. The WSIAT panel (often a three-person panel for Charter issues) will hear the evidence and ultimately release a detailed, precedent-setting written decision.

How Much Does it Cost in Ontario?

Mounting a Charter challenge is incredibly resource-intensive and expensive. 💰 While standard WSIB appeals can be affordable, constitutional litigation is a different tier entirely. Expect the following in 2026:

  • Tribunal Filing Fees: There is $0 CAD charged by WSIAT to file the appeal or the Notice of Constitutional Question.
  • Process Server Fees: Officially serving the Attorneys General usually costs between $100 and $250 CAD.
  • Expert Witness Fees: Hiring medical or constitutional experts to write reports and testify can range from $10,000 to $30,000 CAD.
  • Legal Fees: While some lawyers take standard appeals on contingency, a multi-year Charter challenge usually requires hourly billing. Legal fees can easily exceed $40,000 to $100,000+ CAD, though some cases are funded by unions or legal aid clinics.

How Long Does the Process Take?

Constitutional questions do not move quickly. ⏱ Preparing the complex legal arguments and expert reports takes at least 6 to 12 months. Once the Notice is filed, the Tribunal will often schedule multiple pre-hearing conferences to manage the sheer volume of evidence. The actual hearing may take several days spread over weeks. Following the hearing, the WSIAT panel typically takes 6 to 18 months to draft and publish a complex constitutional decision. Expect the entire process to take anywhere from 3 to 5 years.

Standard Appeal vs. Constitutional Challenge

It is crucial to understand why this process is so much heavier than a normal WSIB dispute. 🧲 Here is a comparison:

FeatureStandard WSIAT AppealConstitutional Challenge
The ArgumentWSIB applied the rules incorrectly to my medical facts.The rule itself is illegal and violates the Charter of Rights.
Notice RequiredNotice of Appeal submitted only to WSIAT and the employer.Mandatory Notice to the Attorneys General of Ontario and Canada.
Impact of WinningYou win your individual benefits.Sets a massive legal precedent affecting thousands of future workers.

Frequently Asked Questions (FAQ)

Can I file a Notice of Constitutional Question without a lawyer?

While you are technically allowed to represent yourself at the WSIAT, it is highly discouraged for Charter challenges. Constitutional law is incredibly dense, and arguing against experienced government litigators requires a seasoned legal professional to have any chance of success.

What happens if I forget to serve the Attorneys General?

If you fail to serve the 15-day notice under the Courts of Justice Act, the WSIAT Vice-Chair is legally prohibited from hearing your constitutional argument. Your hearing will be adjourned and severely delayed until proper notice is given.

Does a WSIAT Charter ruling strike down the law for everyone?

Technically, administrative tribunals like WSIAT can only declare a law “inoperative” for the specific case before them. However, WSIB usually changes its policies province-wide if they lose a major WSIAT Charter challenge, to avoid facing thousands of identical appeals.

Will the government always intervene in my case?

Not always. The Attorneys General will review your Notice. If they feel the challenge is weak or highly specific to your facts, they may decline to participate. However, if your challenge threatens a major piece of provincial legislation, they will absolutely send lawyers to fight you.

Can the WSIAT decision be appealed to the Supreme Court?

WSIAT decisions are generally final. However, if you or the government disagree with the constitutional ruling, the decision can be challenged via Judicial Review at the Ontario Divisional Court, which can eventually be appealed all the way to the Supreme Court of Canada.

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