How CNESST Works

Most Quebec workers are covered, including many who assume they are not. The two routes in are an **employment injury** — an unforeseen and sudden event arising out of work — and an **occupational disease**, a condition characteristic of or directly linked to the work.

Occupational disease claims are harder because there is no event to point to, but Quebec recognises presumptions for certain diseases linked to listed occupations, which shifts the evidentiary burden significantly. Ask whether one applies before building a case from scratch.

Report to your employer, see a physician, and make sure the medical certificate identifies the injury as work-related. Your treating physician's opinion has a privileged role in the Quebec scheme — the CNESST is generally bound by it on defined questions unless the matter is referred to the Bureau d'évaluation médicale.

That is the single most important structural feature to understand: your own doctor's findings carry real weight, so the quality and consistency of what they document matters more than anything you write yourself.

The main benefit is **indemnité de remplacement du revenu** — income replacement paid at a percentage of net income up to an insurable maximum, for as long as you remain unable to do your job. Medical care, medication, travel and rehabilitation are also covered.

If the injury leaves lasting consequences you may receive an indemnity for **atteinte permanente** (permanent impairment), assessed against a regulated schedule, plus a determination of **limitations fonctionnelles** (functional limitations). Those two findings shape everything that follows, including whether you can return to your job.

Employers can offer **assignation temporaire** — temporary modified duties — but your physician must agree the work is compatible with your condition. If your doctor does not authorise it, the assignment cannot proceed, which is a meaningful protection workers often do not realise they have.

You also have a **droit de retour au travail** for a period after the injury, with the length depending on the size of the employer. Where your functional limitations prevent return to your former job, rehabilitation and retraining measures may be available — raise this early rather than when benefits are ending.

Contesting runs in a strict order: the CNESST's own review stage, then the **Tribunal administratif du travail**. You generally cannot skip the review. The TAT hears the matter fresh with evidence and witnesses, and its decision is effectively final — judicial review in the Cour supérieure is available only on narrow grounds.

Two things to watch: employers frequently contest because accepted claims affect their costs, which makes files adversarial without meaning your claim is weak; and reprisal for exercising CNESST rights is prohibited, with its own short complaint deadline. Union representatives, community organisations and specialised counsel all appear in these files.