Workers' Compensation in Quebec: CNESST Claims

Quebec's workers' compensation system runs through CNESST under the Act respecting industrial accidents and occupational diseases, CQLR c. A-3.001 (LATMP). Covered workers get no-fault income-replacement and health care benefits after a workplace injury, generally in exchange for giving up the right to sue their employer, and the LATMP builds in one of the strongest anti-reprisal provisions of any Canadian workers' compensation system.

Information last verified on 2026-08-14. This article has not yet been reviewed by a licensed lawyer.

Key takeaways

Jurisdiction scope: This article addresses workers' compensation coverage, claims, benefits, and appeals in Quebec under the Act respecting industrial accidents and occupational diseases, CQLR c. A-3.001, as administered by CNESST. It does not address workers' compensation in Ontario, British Columbia, Alberta, or Saskatchewan; see RecordingLaw's separate guides to those provinces.

The System Here: CNESST and the LATMP

Quebec's workers' compensation system is administered by CNESST (Commission des normes, de l'equite, de la sante et de la securite du travail) under the Act respecting industrial accidents and occupational diseases, CQLR c. A-3.001, known by its French acronym LATMP. Unlike Ontario, where WSIB and a separate ministry split workplace-safety and compensation functions, CNESST also administers Quebec's labour standards and occupational health and safety statutes under one roof. The Act states its purpose directly: compensation for an employment injury includes the necessary care for the consolidation of an injury, the physical, social, and vocational rehabilitation of an injured worker, the payment of income replacement indemnities, compensation for bodily injury, and, where applicable, death benefits. Appeals from CNESST decisions go to the Tribunal administratif du travail (TAT), Quebec's Administrative Labour Tribunal.

The Act's no-fault bar is written in direct, unqualified terms. Section 438 states: "No worker who has suffered an employment injury may institute a civil liability action against his employer by reason of his employment injury." Section 439 extends that bar to survivors after a death caused by an employment injury, and section 441 generally extends it to suing other employers covered by the Act as well, not only one's own, subject to narrow exceptions such as fault established by a criminal conviction. Section 442 bars suing a co-worker for a workplace fault, with an exception for a health professional at fault for a distinct injury. A beneficiary who could instead sue an uncovered third party must elect, within 6 months (2 years for sexual violence), whether to sue or claim benefits, under sections 443 and 444; someone who sues and recovers less than the Act would have paid can claim the shortfall from CNESST within 6 months of the final judgment.

Who Is Covered (and Who Isn't)

The Act covers anyone under a contract of employment, plus a long list of people it deems to be workers even without one. Section 9 deems an independent operator, a self-employed person who does not employ any worker, to be a worker of whoever hires them if the work is similar to or connected with that hiring party's own activities, with narrow exceptions such as a service-exchange arrangement between two independent operators in similar work. Section 10 deems a student a worker of their educational institution for unremunerated job-shadowing or training placements, and section 10.1 deems paper carriers workers of whoever hires them. Several categories of volunteers, including government-related volunteers, emergency and disaster-response volunteers, and firefighting assistants, are deemed workers under sections 11 through 12.0.1, as are incarcerated people in paid correctional work programs under section 12.1, and other establishment volunteers with the establishment's agreement under section 13.

Domestic workers are covered, with one exception: a domestic worker who works fewer than 420 hours over one year for the same individual employer is not covered, unless they can show 7 consecutive weeks at 30 or more hours a week during that period.

People who are not automatically covered, including independent operators, non-covered domestic workers, and executive officers or directors of legal persons, can register voluntarily with CNESST under section 18 to get protection under the Act, and an association of independent operators or non-covered domestic workers can register its members collectively under section 19.

The LATMP does not itself address federal government employees, since their coverage runs through the federal Government Employees Compensation Act (GECA) rather than provincial law. Whether a GECA claim from a federal worker employed in Quebec is administered by CNESST the same way WSIB administers similar claims in Ontario was not independently confirmed for this article.

Filing a Claim: The Six-Month Deadline and the Employer's Two-Day Window

A worker who suffers an employment injury must notify their immediate supervisor, or another representative of the employer, before leaving the workplace if possible, or otherwise as soon as possible, under section 265. A plain-language description of what happened, where, and how is enough, and the employer must help the worker give that notice under section 266.

The deadline to actually file a claim with CNESST is 6 months, with one recent exception:

• Section 270: a worker unable to work for more than 14 full days, or with a permanent impairment, or a beneficiary after a worker's death, must file within 6 months of the injury or death.
• Section 271: a worker whose injury does not cause absence beyond the day it happened, or whose employer is not obligated to pay under section 60, has the same 6-month deadline.
• Section 272: for an occupational disease, the 6 months run from when the worker or beneficiary is made aware of the disease or of a death caused by it.
• The exception: a claim for an injury resulting from sexual violence gets 2 years, not 6 months, under an amendment added by 2024, chapter 4, section 9, a materially newer and more generous rule than the general deadline.

The employer's reporting duty is not a flat number of days from the accident, the way it is sometimes assumed to work, and it should not be confused with Ontario's 3-business-days-from-the-accident framing. Section 267 requires a worker who cannot work beyond the day of injury to give the employer a medical certificate; if no employer is bound to pay under section 60, the worker sends the certificate to CNESST directly. Section 268 requires an employer bound to pay under section 60 to notify CNESST that the worker cannot work beyond the injury day and to claim reimbursement, on a prescribed form covering the worker's identifying information, the disability or death date, the accident's circumstances, gross income, the amount paid under section 60, and, where relevant, the grounds for contesting that an employment injury occurred at all. Section 269 sets the actual deadline: the employer must transmit that form and a copy of the medical certificate to CNESST within 2 days after the earlier of the worker's return to work, if within 14 full days of the disability starting, or the 14-full-day mark itself, if the worker has not returned by then. That deadline is pegged to the return-to-work or 14-day milestone, not the injury date itself, so an employer should not assume the clock starts running the same way it might in another province.

Benefits: A 90% Rate, and the Employer Pays the First 14 Days

Quebec's wage-loss benefit, called the income replacement indemnity (IRR), is set higher than Ontario's. Section 44 entitles a worker who becomes unable to work because of an employment injury to an IRR, and section 45 fixes the rate directly: "The income replacement indemnity is equal to 90% of the weighted net income that the worker derives annually from his employment." That is a full 5 points above Ontario's 85% net-average-earnings rate.

The two provinces also calculate "net" differently, not just at a different rate. Section 63 defines weighted net income as gross annual employment income minus deductions that CNESST weights by income bracket to reflect the worker's family situation, rather than a flat personal-tax-style deduction. A worker or advisor used to Ontario's calculation should not assume Quebec's works the same way underneath the similar-sounding "net" label.

The most distinctive feature of Quebec's benefit structure has no equivalent identified in Ontario's system for this article: section 60 requires the employer itself, not CNESST, to pay the worker directly for the first 14 full days of disability, at 90% of the worker's net salary or wages for each day or part of a day they would normally have worked. CNESST then reimburses the employer, with interest if the reimbursement is late. Only after that 14-day, employer-funded bridge does CNESST-funded IRR take over. Under section 61, the employer must also keep paying the worker's net wages for time off to attend care or medical exams related to the injury or rehabilitation, even after the worker returns to work.

On the maximum insurable earnings ceiling, this article is deliberately incomplete. CNESST's own site could not be reached while researching this page, so the current maximum yearly insurable earnings figure could not be independently confirmed and is not published here. The LATMP itself fixes a historical anchor in section 66: for 1985, the Maximum Yearly Insurable Earnings was $33,000, a figure indexed annually since. A worker or employer who needs the current-year ceiling should check it directly at cnesst.gouv.qc.ca rather than rely on a figure repeated elsewhere without a primary source.

Beyond income replacement, CNESST pays for the care necessary to treat a compensable injury, and a worker with a lasting physical or mental impairment can receive compensation for bodily injury (indemnite pour prejudice corporel, IPC) under sections 83 to 91. The award is a percentage, up to 100%, of permanent impairment multiplied by an age-banded amount set out in Schedule II, under section 84; section 86 sets a minimum award of $500 wherever any deficit exists; and section 87 adds a bonus equal to 25% of the compensation on any percentage that pushes combined impairments from one accident past 100%. This structure is broadly similar in shape to Ontario's Non-Economic Loss award, a rating multiplied by a scheduled amount, but the specific mechanics, Quebec's age bands and 25% excess bonus, are not identical to Ontario's, and section 91 excludes bodily-injury compensation on death, where a separate survivor-benefit division applies instead.

Appeals: 30 Days to CNESST Review, Then 60 Days to the Tribunal

Quebec's internal appeal structure is more uniform than Ontario's split objection deadlines, and every deadline below comes directly from the statute's own text.

A separate election exists for certain decision types under section 360: instead of the two-stage path above, a person may choose either a 30-day application for review or go straight to the Tribunal within 60 days of the original decision. Under section 361, a CNESST decision takes effect immediately despite a pending review or contestation, except a decision awarding bodily-injury compensation or a lump-sum death benefit, which only takes effect once final.

Quebec's 30-days-to-review, 60-days-to-Tribunal cadence, with a 90-day CNESST-silence escape hatch, is a fundamentally different structure from Ontario's split 30-day-or-6-month objection track followed by a further 6-month WSIAT deadline. A worker or employer who has dealt with one province's appeal system should not assume the other runs on the same clock.

Protection From Reprisals: Section 32 and the Six-Month Presumption

The LATMP contains its own standalone anti-reprisal provision, something Ontario's WSIA does not; Ontario's equivalent protection sits in a different statute (the Occupational Health and Safety Act) rather than in its workers' compensation act itself. Section 32 states: "No employer may dismiss, suspend or transfer a worker or practice discrimination or take reprisals against him, or impose any other sanction upon him or refuse to reinstate him in an employment contrary to a decision of the Commission because he has suffered an employment injury or exercised his rights under this Act."

CNESST has exclusive jurisdiction over section 32 complaints under section 252, and a complaint must be filed in writing within 30 days of the worker learning of the sanction or action, under section 253. CNESST may attempt conciliation with the worker's consent under section 254.

The provision that gives this protection real teeth is the section 255 reverse presumption: if a worker is sanctioned within 6 months of suffering an employment injury or exercising a right under the Act, the law presumes the sanction was imposed because of the injury or the exercise of that right, and the burden shifts to the employer to rebut it. That is a materially more worker-favorable mechanism than a plain reprisal ban with no presumption, and it is a genuine structural difference from Ontario, where the equivalent right runs through a separate statute without a comparable presumption in the material available for this article. Pending a final decision, CNESST can order interim reinstatement with full pay and benefits under section 256, and a successful complaint under section 257 can result in reinstatement, cancellation of the sanction, an order to stop the retaliation, and back pay of lost salary, wages, and benefits.

For workers' compensation in Ontario, British Columbia, Alberta, and Saskatchewan, see RecordingLaw's separate guides to Ontario workers' compensation, British Columbia workers' compensation, Alberta workers' compensation, and Saskatchewan workers' compensation.

Disclaimer

This article provides general information about the workers' compensation system in Quebec. It is not legal advice and does not create a lawyer-client relationship. It addresses the Act respecting industrial accidents and occupational diseases, CQLR c. A-3.001 (LATMP), as administered by CNESST, current as of the verification date above, and the section numbers cited here were read directly from the Act's consolidated English text at LegisQuebec. CNESST's own website could not be reached while researching this article, so the current maximum yearly insurable earnings figure, current statistics, and some procedural details, including the practical form name for the employer's section 268/269 notice, are not published here or are based on the statute's text alone rather than CNESST's own guidance; confirm current figures and procedures directly with CNESST before relying on them for a specific claim. Anyone with a workplace injury or a CNESST dispute should contact CNESST directly or consult a lawyer licensed in Quebec.