Workplace Safety — Quebec

Workplace health and safety in Quebec is governed by two separate statutes — and confusing them is the most common mistake a worker makes. The Act respecting occupational health and safety (Loi sur la santé et la sécurité du travail, CQLR c S-2.1 — the LSST) governs prevention: the right of refusal, preventive withdrawal during pregnancy, joint health and safety committees, employer duties to identify and eliminate risk. The Act respecting industrial accidents and occupational diseases (Loi sur les accidents du travail et les maladies professionnelles, CQLR c A-3.001 — the LATMP) governs compensation after the fact: income replacement, medical care, rehabilitation, permanent impairment indemnity. Both are administered by the CNESST — the single agency for everything labour-standards, pay-equity, OHS, and workers' comp in Quebec.

Right to refuse dangerous work — LSST s. 12-31

Under LSST s. 12, every worker has the right to refuse a task if they have reasonable grounds to believe its performance would expose them or another person to a danger to health, safety, or physical well-being. The right cannot be exercised if the refusal would put another person's life in immediate danger, or if the danger is a normal condition of the work (s. 13). The procedure is fixed by statute:

1. Report immediately to the supervisor. The worker must notify their immediate superior, the employer, or an employer representative as soon as they decide to exercise the refusal.
2. Joint examination with the safety representative. The supervisor examines the situation together with the worker and the workplace health and safety representative (or, if there is none, a worker chosen by the refusing worker).
3. Three possible outcomes. (a) Agreement that danger exists → corrective measures applied. (b) Agreement that no danger exists → work resumes; another worker may be assigned the refused task only after being told in writing of the previous refusal and the reasons given for it (s. 17). (c) Disagreement between the parties → a CNESST inspector intervenes, examines the situation, and renders a decision binding on both sides (s. 18-19).
4. Right to appeal. The inspector's decision can be contested before the Tribunal administratif du travail under the CNESST review procedure.

Wages during the investigation — LSST s. 14: while the refusal is under review, the worker is deemed to be at work and must be paid their regular wages. The employer can temporarily reassign the worker to other tasks they are reasonably able to perform; the worker cannot be docked, suspended, or disciplined for exercising the right. Reprisal for a lawful refusal is a prohibited practice under LSST s. 30.

Preventive withdrawal for pregnant or nursing workers — LSST s. 40-48.2 (unique to Quebec)

Quebec is the only Canadian jurisdiction with a statutory preventive-withdrawal regime for pregnant and breastfeeding workers. No other province has anything like it. The program is called Pour une maternité sans danger (PMSD — "For a Safe Maternity Experience") and works as follows:

• The right is conditional, not automatic. Pregnancy alone does not entitle a worker to withdrawal — the work itself must pose a physical risk to the worker's health, to the pregnancy, or (after birth) to the nursing child. Typical risks: exposure to chemicals, infectious agents, ionizing radiation, heavy lifting, prolonged standing, night shifts, violence risk.
• Medical certificate from the treating physician (s. 40 LSST). The certificate must follow the form prescribed by the Regulation respecting the certificate issued for the preventive withdrawal and re-assignment (CQLR c S-2.1, r. 3) and identify the specific risks. If no published clinical protocol matches the worker's situation, the treating physician must consult the physician in charge of public health services in the establishment or the regional public health director (DSP) to obtain a medical-environmental report before issuing the certificate.
• Employer's duty: reassign first (s. 41). Once the certificate is delivered, the employer must immediately reassign the worker to tasks free of the identified risk that she is reasonably able to perform — at her existing wage and with her existing seniority, benefits, and other entitlements preserved (s. 43).
• If reassignment is not possible: paid withdrawal (s. 42). The worker stops working and CNESST pays an income replacement indemnity equal to 90% of net income (calculated under LATMP s. 44-69). The indemnity is paid by the employer for the first 5 working days at 100% of regular wage, then by CNESST every two weeks at 90% of net thereafter. The indemnity is not taxable.
• Nursing mothers (s. 46). The same regime applies to breastfeeding workers — reassign first, paid withdrawal if not possible.
• End of withdrawal. The preventive withdrawal ends at the fourth week before the expected delivery date, when the worker transitions to maternity benefits under QPIP (a different program administered by Retraite Québec, not CNESST). After delivery, the right can re-open under s. 46 for nursing.

Bill 59 — modernization of the OHS regime (in force 6 October 2021)

The Act to modernize the occupational health and safety regime (SQ 2021, c 27 — Bill 59) received royal assent on 6 October 2021 and is the most significant overhaul of Quebec OHS law since the LSST was first adopted in 1979. Key changes phased in through 2026:

• Mandatory joint health and safety committees in workplaces with 20+ workers. Before Bill 59, the committee requirement was restricted to certain priority sectors. Now every establishment with 20 or more workers must establish a committee, with at least one worker representative and one employer representative. In force on an interim basis from 6 April 2022.
• New mandatory prevention program (replaces the old prevention plan) for 20+ workplaces. Larger workplaces must adopt a written prevention program identifying hazards, setting priorities every three years, and documenting follow-up. Workplaces under 20 employees adopt a lighter action plan and designate a worker liaison officer instead.
• Psychological violence and spousal/family violence in the workplace added to the employer's general duty of care (amended LSST s. 51, paragraph 16).
• Permanent regulation in force 1 October 2025. The Regulation respecting prevention and participation mechanisms came into force on 1 October 2025 with a one-year compliance grace period ending 1 October 2026 — employers should already be in full compliance.

Workers' compensation claim — LATMP (CQLR c A-3.001)

If you are injured at work or develop an occupational disease, you file directly with CNESST — you cannot sue your employer (the LATMP scheme bars civil action against the employer for employment injuries; see LATMP s. 438). The benefits include medical care, income replacement, rehabilitation, and indemnity for permanent impairment.

• 6-month filing deadline. Under the LATMP, you must file the Worker's Claim form (formulaire 1939-A) within 6 months. For a work accident, the clock starts on the date of the injury. For an occupational disease, it starts when (i) the illness is diagnosed by a healthcare professional AND (ii) the worker realizes the probable link between the illness and the work. Exception (Bill 42, 2024): for an employment injury resulting from sexual violence, the deadline is extended to 2 years.
• Section 270 LATMP requires the worker to give the employer a copy of the completed claim form — keep proof of delivery (email, signed receipt, registered mail).
• Income replacement: 90% of net. The indemnity equals 90% of net income up to the MIE. The first 14 days are paid by the employer at 90% of net (s. 60); CNESST pays from day 15 onward.
• Medical consolidation milestone. When the treating physician declares the injury consolidated (médicalement consolidé), CNESST assesses whether any permanent functional impairment (atteinte permanente à l'intégrité physique ou psychique, APIPP) remains. If yes, a lump-sum permanent impairment indemnity is paid under LATMP s. 83-93. The impairment rating uses Quebec's own scale (the Barème des dommages corporels) — not the AMA guides used in other provinces — so a percentage rating from another province cannot be carried over directly.
• Right to return to work. The worker has the right to return to the pre-injury job (or an equivalent) for 1 year in workplaces of 20 or fewer workers and 2 years in workplaces of more than 20 workers, counted from the start of the absence (LATMP s. 240).