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CNESST employer registration (Quebec)

CNESST employer registration is the step by which a Quebec employer enrols with the Commission des normes, de l’équité, de la santé et de la sécurité du travail. The CNESST says to register if, among other cases, you hire at least one worker and have an establishment in Quebec.

A buyer meets CNESST registration when acquiring a business with an establishment in Quebec. The CNESST site covers the employer’s registration, classification and assessment notices, so a buyer can ask what the seller’s CNESST file shows.

What the CNESST says

The CNESST’s registration page says to register if you hire at least one worker, full-time or part-time, and have an establishment in Quebec, or if you hire a self-employed worker the CNESST considers a worker. The CNESST gives 60 days from the first working day of the first worker to register, and allows registration up to 30 days before the worker starts. The same site covers the employer’s classification and contribution notices. On a sale, merger or acquisition, the CNESST says the employer must report the change to it. This entry covers Quebec only; check the rules in the province where the business is.

What to check or ask

  • Whether the seller is registered and which classification it holds
  • Whether any contribution notice or balance is outstanding
  • Whether the change of ownership has been reported to the CNESST

For wider staff exposure, read employment liabilities you inherit. Quebec payroll premiums are described under QPIP premiums.

Sources

This definition is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    CNESSTRegulator
    S’inscrire à la CNESST
    cnesst.gouv.qc.ca·Checked Oct 24, 2026
  2. 02
    CNESSTRegulator
    Sale, merger or purchase of a company
    cnesst.gouv.qc.ca·Checked Aug 16, 2026

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