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Established in 1985, the Workplace Safety and Insurance Appeals Tribunal (WSIAT) is the final level of appeal to which workers and employers may bring disputes concerning workplace safety and insurance matters in Ontario. WSIAT has always been separate from and independent of the Workplace Safety and Insurance Board.

Notice regarding WSIAT operations during COVID-19

The WSIAT is committed to continuing its services to stakeholders, while also supporting the Province-wide effort to stop the spread of COVID-19.

Throughout the COVID-19 pandemic, the WSIAT’s operations have been guided by the following values and commitments:

  1. Protecting the health and safety of the WSIAT’s employees, OICs (adjudicators), and stakeholders;
  2. Ensuring access to justice; and
  3. Delivering excellence in adjudication, which includes conducting fair hearings in accordance with the principles of natural justice and issuing well-reasoned decisions in a timely manner.

In line with public health recommendations during COVID-19, the WSIAT has focused on conducting hearings through alternative hearing methods, namely, videoconference, teleconference, and written process. (Alternative dispute resolution is also available in appropriate cases.)

The WSIAT will continue to adjust its procedures and practices in response to changing circumstances. The WSIAT is committed to clear and timely communication with stakeholders during this time of rapid change.

For up-to-date information regarding the WSIAT’s practices and procedures during COVID-19, please click the following link:

WSIAT Notices and Updates on COVID-19



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Documents & Publications

Legal/Medical Resources

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Links to Other Agencies


Remembrance Day – Office closure Wednesday, November 11, 2020NEW

November 9, 2020

WSIAT’s New E-filing Service – Additional FAQsNEW

October 2, 2020

WSIAT’s New E-filing ServiceNEW

September 4, 2020

Tribute to Ian J. Strachan, Tribunal Chair 1997-2016NEW

July 29, 2020

Workplace Safety and Insurance Appeals Tribunal 2019 Annual ReportNEW

July 10, 2020

Stakeholder Meeting Summary – April 21, 2020

May 25, 2020

WSIAT Donates Supply of N95 Masks to Mount Sinai Hospital

March 27, 2020

WSIAT Chair Appointment

February 7, 2020

In-Person Information Session for WSIAT Stakeholders:
February 11, 2020, 4:00 – 5:30 p.m.

January 21, 2020

# Announcements Archive

Highlights of Noteworthy Decisions

Decision No. 556 20

Apportionment of costs between Schedule 2 employers. Cost of an independent living allowance and personal care allowance flowing from a secondary condition are to be charged to the original accident employer.

Decision No. 905 20

Whether an emergency services dispatcher had entitlement for traumatic mental stress.

Decision No. 3125 17

Whether the worker had entitlement for psychotraumatic disability as a result of a traumatic brain injury.

Decision No. 645 19

Consideration of entitlement for surgery out of Ontario.

Decision No. 674 20

Whether a worker's death resulted from a compensable injury.

Decision No. 877 20

Whether, in the circumstances, obesity and smoking were pre-existing conditions for purposes of SIEF relief.

Decision No. 737 20

Consideration of an objection to the COVID-19 hearing format selected by the Tribunal for the appeal.

Decision No. 1875 19 I

Whether a decision of the College of Physicians and Surgeons of Ontario regarding a doctor is admissible in a Tribunal appeal.

Decision No. 733 20

Consideration of entitlement for traumatic mental stress.

Decision No. 430 20

Payment of rent differential as a health care measure.

View more recent noteworthy decisions...


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