In a disputed file, a declaration received under oath carries more weight, since the declarant formally confirms the truthfulness of the facts before an authorized person.
In what situations is a declaration under oath useful?
- describing the circumstances of a workplace accident;
- testifying to working conditions related to an occupational illness;
- supporting a dispute before the Tribunal administratif du travail;
- confirming facts as a coworker or witness to the event.
Who can sign a declaration in this context?
The worker concerned, a witness to the event, or any other person who can confirm facts relevant to the file.
Does CNESST always require a declaration under oath?
No. It depends on the file, how far it has progressed — initial claim, review, dispute — and what exactly the officer or tribunal requests. Always check what is required in your specific file.
What should the declaration contain?
- the declarant's identity and their connection to the file;
- a precise, chronological description of the facts;
- a statement of the truthfulness of the information provided.
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 a government website, does not represent workers before 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.