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Administrative Tribunals · Ontario

Workplace Safety and Insurance Appeals Tribunal (WSIAT)

WSIAT is the final level of appeal for WSIB decisions in Ontario. You must complete the WSIB's internal reconsideration first, then appeal within the statutory deadline. WSIAT decisions are final, with only judicial review in the Divisional Court available on limited grounds.

What it does

  • Hears appeals of final WSIB decisions
  • Decides entitlement, benefit level and return-to-work appeals
  • Rules on whether the right to sue is taken away by the Act

Matters it hears

  • Initial and ongoing entitlement appeals
  • Permanent impairment and loss of earnings disputes
  • Occupational disease and mental stress appeals
  • Right-to-sue applications

Appeals & review

Appeals generally go to Divisional Court (Ontario).

WSIAT decisions are final. Judicial review in the Divisional Court is available only on limited grounds such as unreasonableness or procedural unfairness.

Appeal and review deadlines are short and strictly applied. Treat the decision date as the start of a clock.

Frequently Asked Questions

Do I have to go through the WSIB first?
Yes. WSIAT only hears appeals of final WSIB decisions, so the internal reconsideration is a prerequisite.
What is the appeal deadline?
There is a statutory period running from the WSIB's final decision. Missing it can end the appeal, so diarize it immediately.
Can I get free representation?
The Office of the Worker Adviser represents non-unionized workers at no cost, and legal clinics also assist. Unionized workers are typically represented by their union.
What is a right-to-sue application?
An application asking WSIAT to determine whether the Act removes your right to sue someone over a work-related injury. It is often decisive for a parallel civil claim.

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General information about jurisdiction and process, not legal advice. LegalCounselNearMe is not a law firm and is not affiliated with Workplace Safety and Insurance Appeals Tribunal (WSIAT). Procedures, forms and fees change — the official site is authoritative.