Claim and account correspondence — local
Send documents using your WSIB form’s instructions.
Workplace Safety and Insurance Board
Find WSIB fax routes for claim/account correspondence, appeals and collections in Ontario.
InsuranceCanadaLast reviewed
Claim and account correspondence — toll-free
Toll-freeAlternative to the general local fax.
Appeals
Send correspondence to WSIB Appeals.
Collections Branch
Send Collections Branch correspondence.
Which Workplace Safety and Insurance Board fax number should I use?
Use the general fax pair for correspondence following your claim or account form. Appeals and Collections each have a separate line. The local and toll-free general numbers are alternatives, not two required submissions.
What to include in your fax to Workplace Safety and Insurance Board
Send the applicable WSIB form and requested attachments. Identify the claim or employer account and follow the instructions on an appeal or collections notice. Online document submission is also available.
Check the destination and prepare your cover page
Include the claim/account number, intended department, callback details and page count.
Open the official source above and check the current instructions. A reviewed source confirms a published number, not live availability. Toll-free numbers can still incur sending-service or international charges.
Confirm delivery and follow up with Workplace Safety and Insurance Board
Keep the transmission result and a copy of the documents. Confirm with the receiving department that the packet is complete and can be processed; a delivery receipt does not establish acceptance or a decision. These are fax destinations, not voice support lines. Check with Workplace Safety and Insurance Board before sending a duplicate.
How to fax Workplace Safety and Insurance Board without a fax machine
Prepare a legible PDF, confirm the department and number, and review all pages before authorizing the fax. With DearFax, you can send online or prepare a workflow through ChatGPT, Codex and MCP. Save the transmission result with your records.
Frequently asked questions
Workplace Safety and Insurance Board fax questions
Claim and account correspondence — local: +1 416 344 4684. Claim and account correspondence — toll-free: +1 888 313 7373. Appeals: +1 416 344 3600. Collections Branch: +1 905 521 4203. Use the general fax pair for correspondence following your claim or account form. Appeals and Collections each have a separate line. The local and toll-free general numbers are alternatives, not two required submissions.
No. They are local and toll-free alternatives. Choose one and retain the transmission result; duplicate faxes can create duplicate correspondence.
Send the applicable WSIB form and requested attachments. Identify the claim or employer account and follow the instructions on an appeal or collections notice. Online document submission is also available.
Include the claim/account number, intended department, callback details and page count.
Prepare your documents as a legible PDF and confirm the recipient’s submission requirements. You can use DearFax in your browser or prepare the fax with ChatGPT or Codex through MCP. Review the number and pages before authorizing the send, then keep the transmission result. Delivery does not confirm that the recipient accepted or processed your request.