Contact us

Canada and the United States

1 844 838-0808*

Our telephone service hours are as follows (Eastern Standard Time), except on statutory holidays:

  • Monday: 8 a.m. to 4:30 p.m.
  • Tuesday: 8 a.m. to 4:30 p.m.
  • Wednesday: 9:30 a.m. to 4:30 p.m.
  • Thursday: 8 a.m. to 4:30 p.m.
  • Friday: 8 a.m. to 4:30 p.m.

Make sure you have the following information ready so that we can handle your call as quickly as possible:

For a worker's file
  • File number
  • Date of the event
For an employer's file
  • Numéro d'entreprise du Québec (NEQ) ou numéro de l'entité légale (ENL)

For calls from outside Canada and the United States, call: 1 514-906-3250

You can send us a request for information using our online form (in French only).

Fill out an online information request

For a compensation and rehabilitation file

You must fax your document to: 1 855 722‑8081

For a file related to a labour standards complaint or recourse

Use the transmission of documents form

1 844 838-0808 Option 1

You can make an anonymous report.

Find an office

Regional offices

Although the CNESST continues to operate and provide services, the reception desks in our regional offices are temporarily closed. If you have any questions or if you need to file documents or follow up files, use our online services or telephone service.

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Workplace complaint

You may file a complaint with the CNESST for a variety of reasons. Learn about the different grounds for complaints and recourses.

Service quality

We are committed to providing you with quality services and meeting your needs.

If you are not satisfied with our services, contact the person in charge of your file.

If you are still not satisfied despite our efforts to serve you, you may file a service quality complaint.

If you would like to make comments and suggestions without filing a complaint, you can do so using the online comment form (in French only).