Contact us


The Workplace Safety and Insurance Board

Telephone: 416-344-1000
Toll free: 1-800-387-0750
TTY: 1-800-387-0050
Fax: 416-344-4684 or 1-888-313-7373

Reporting a new injury, illness or exposure? Submit online.

Sending us a claim document? Upload it online.

Head Office
200 Front Street West
Toronto, Ontario M5V 3J1


To report a fatal or catastrophic workplace accident, call us at 1-800-387-0750, Monday to Friday 7:30 a.m. to 5 p.m.


Have a question about your account?

Email us at

By emailing us, you acknowledge and accept that there are risks associated with communicating by email. Sending information by unencrypted email has a number of risks. If you want to receive a reply to your message by email, you need to add your email address as an authorized contact on your account by completing the email consent form for businesses (PDF). Read more about communicating by email with the WSIB.

Need to update your address?

Update your business’ physical and mailing addresses online

Keep in mind that these businesses should continue to contact us to update their address:

  • Schedule 2 organizations
  • Businesses with international mailing addresses
  • Businesses with multiple branch locations

Having trouble with our online services?

If you have an online services account and have a question about using these services you can contact us by:


Phone: 416-344-4122 or 1-888-243-1569

For questions related to a claim, please call us.



Contact us for information on how we deal with disputes:

WSIB offices

To help protect people from the spread of COVID-19, we have temporarily closed our offices to the public. Read our update about COVID-19.

You can still reach us by telephone or use our online services.

WSIB Collections Branch

Street address:
P.O. Box 2099 Stn. LCD1 120 King Street West
Hamilton, ON L8N 4C5
Toll Free: 1-800-268-0929
Fax Number: 905-521-4203

Mailing address:

200 Front Street West
Toronto, Ontario M5V 3J1


Media enquiries

Reporting fraud and abuse of the system

If you suspect anyone involved in a WSIB case (person, business, representatives, supplier or health care practitioner) is not dealing honestly with us, you can use our toll-free action line at 1-888-SI-LEADS (1-888-745-3237), Monday to Friday, 7:30 a.m. to 5 p.m. or email us at or contact us confidentially through our website

Legal proceeding documents

You can send us legal documents electronically for court or legal proceeding involving the WSIB, or in which the WSIB is a party (e.g., application or motion materials).

Website feedback

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