This declaration is distinct from the injured worker's own declaration — it corroborates or clarifies the facts from the point of view of a person present on the scene.
Sworn declaration for a CNESST file: how does it work?
In what situations is it useful?
- the accident is disputed by the employer or insurer;
- no other material evidence of the event (camera, incident report) is available;
- clarifying the exact circumstances for the Tribunal administratif du travail;
- supporting the initial claim or a file review.
What should the declaration contain?
- the witness's identity and their connection to the injured worker (coworker, supervisor);
- a precise, chronological description of what was observed;
- the witness's position at the time of the event (proximity, line of sight);
- a statement of truthfulness.
Does CNESST always require a witness declaration?
No — it depends on the file and the level of evidence already available. Check what is required in the specific file concerned before having the declaration sworn.
Can it be sworn online?
Yes, when the document and situation are eligible for remote oath commissioning, by videoconference.
Online oath commissioning in Québec: how does it work?
Assermentation Express
Assermentation Express is not affiliated with CNESST and does not offer advice on a claim. This service is limited to receiving the oath or solemn affirmation on a document already prepared.