Learn about your responsibilities as a business, including your responsibility to report a workplace injury or illness to us and participate in the return-to-work process. You’ll also find information about occupational disease and workplace health hazards, the benefits provided to people who have a workplace injury or illness and how to view claim information online, any time.

You can also use our injury or illness reporting self-evaluator to help make sure you’re complying with legislative requirements, and identify and address any issues in your injury or illness reporting processes.

Report an injury or illness

For fatal or catastrophic workplace accidents, report online or call us at 1-800-387-0750, Monday to Friday 7:30 a.m. to 7:45 p.m.

View claims registered with your business 

You can access information about claims registered with your business, including individual claim status, latest payments and approved benefits, through your online services account. You’ll also be able to send us messages about the claims, any time. To get started: 

  • Log in under the businesses tab on the online services page
  • Select view your claims
  • Enroll your account to the service, you’ll need your WSIB account or firm number and additional information to verify your account

Retroactive wage increases for public sector employees

Due to the Supreme Court decision to overturn Bill 124, which capped wages of public service employees, we're recalculating benefits and issuing retroactive adjustments to people impacted.

If your employees were impacted by Bill 124 and had a loss-of-earnings claim during the three-year period it was in effect, they're eligible for a retroactive update to their benefits. Employers are required to provide this information to us to make these adjustments. To help make this easier, we’ve created a
 to make sure all the information we need is captured in one document. We've also created a sample template letter that must also be included with your spreadsheet submission.


Please download and complete the retroactive wage benefits spreadsheet for all impacted employees and email the spreadsheet and sample letter to Bill124@wsib.on.caYou only have to submit one generic letter for all claims.

It may take a number of months for us to complete the retroactive benefits adjustment. You can advise your employees that you've submitted their claim for adjustment and that we're working on processing retroactive adjustments to their benefits.

If you have additional questions, check out our frequently asked questions for more information. 

Occupational disease and workplace hazards


Administrative Practice Documents