Which of these is a worker's duty under the Act?
ASP Construction Exam: Prevention principles, rights and duties
Eliminating hazards at the source, the right to refuse dangerous work, protection against reprisals, and the duties of workers and employers under the OHS Act.
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- 14 questions
- Topic drill
Study reference: Québec Construction Safety Code (CSTC), OHS Act (LSST) and ASP Construction (Oct 2026), Ch. 1 Prevention principles, rights and duties — LSST ss. 2, 3, 9, 10, 12–19, 30, 49, 49.1, 51
All 14 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
Which of these is a worker's duty under the Act?
- Writing the lockout procedure for each machine
- Buying their own harness and hard hat before starting work on the site
- Reading and understanding the prevention program that applies to them
- Sending the site opening notice to the CNESST
What must a worker who refuses to do a task do first?
- Leave the site and wait at home for a phone call from the CNESST
- First send a written complaint to ASP Construction
- Finish the task, then fill out a refusal form at the end
- Notify their immediate supervisor or the employer right away
While a worker is exercising the right to refuse, what does the Act provide?
- They must go home without pay until the investigation ends
- The employer may immediately give the task to another willing worker
- They lose their pay until the inspector makes a final decision
- They are deemed to be at work, and the task is not normally given to someone else
In which case may a worker not exercise the right to refuse?
- If they have worked for the company for less than three months in total, probation included
- If they are not a member of a union or certified association
- If refusing puts another person's life or safety in immediate danger
- If they already used this right once before during the same calendar year
Under Québec's Act respecting occupational health and safety, what is the main goal of prevention?
- Reducing the number of CNESST site inspections
- Eliminating hazards at their very source
- Giving protective equipment to every worker
- Compensating injured site workers quickly
After a refusal, who must the supervisor call in to examine the situation?
- A doctor appointed by the CNESST to examine the worker
- The police officer of the town where the site is located
- The maker of the equipment involved, if reachable by phone the same day
- The health and safety representative or, failing that, the person set out in the Act
An employer hands out harnesses to everyone and stops trying to reduce work at height. What does the Act say?
- Protective equipment must not reduce efforts to eliminate the hazard at the source
- The employer is released from its duties once the equipment has been handed out
- The Act lets the employer choose freely between protecting workers and eliminating the hazard
- A harness is enough once it is supplied free of charge to every worker exposed to a fall
A worker arrives on site impaired by cannabis. What does the Act say?
- They may work if they used it the evening before, before midnight
- The Act only covers alcohol, not cannabis or drugs
- On a construction site, this condition is a risk and they must not work
- They may work if they just avoid working at height
If the disagreement continues after the examination, who decides whether a danger justifies the refusal?
- The 30-hour course trainer
- The site's principal contractor
- The site committee, by a vote
- The CNESST inspector
When may a worker exercise the right to refuse work?
- When the task is not part of their usual job description at the company
- Only when a CNESST inspector is already present on the construction site
- When they feel the task is too long or too tiring for what they are paid
- When they have reasonable grounds to believe the work exposes them to danger
A worker refused work in good faith. What may the employer not do?
- Call in the health and safety representative
- Dismiss, suspend or transfer the worker for that reason
- Ask the worker to notify their supervisor
- Correct the dangerous situation they reported
Which of these duties belongs to the employer?
- Letting experienced workers work with no supervision or instructions
- Making workers pay half the cost of their protective equipment
- Informing workers of the risks and providing training and supervision
- Deciding alone not to supply equipment if the worker already has some
A roofer refuses to work on a roof with a compliant guardrail, only because it is high up. Why can this refusal be rejected?
- A refusal must be announced in writing 24 hours ahead
- The conditions are normal for that kind of work
- A roofer needs the union's approval before refusing
- The right to refuse never applies to work done on roofs
A worker believes a task would endanger a co-worker working below. May they refuse to do it?
- Only if the co-worker has already refused the work themselves
- Only if the co-worker in danger first gives written consent
- No, the right to refuse only protects the person doing the task
- Yes, the right also covers a similar danger to another person
Prevention principles, rights and duties: key rules to remember
Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗
Object of the Act
- The goal of Québec's Act respecting occupational health and safety (LSST) is to eliminate hazards to workers' health, safety and physical and psychological integrity at their very source.
- The Act sets up participation by workers, employers and their associations in reaching that goal.
- Supplying personal or collective protective equipment must not reduce the effort to eliminate the hazard at the source: protective equipment is a last resort.
Workers' rights
- Workers have the right to working conditions that respect their health, safety and physical and psychological integrity.
- They have the right to training, information and advice on health and safety, and to appropriate training, coaching and supervision.
- They are paid during a health exam required by the Act; the employer pays for the exam and travel costs.
Right to refuse
- A worker may refuse to do a job if they have reasonable grounds to believe it exposes them, or another person, to danger.
- They may not refuse if refusing puts another person's life, health or safety in immediate danger, or if the conditions are normal for that kind of work.
- They must notify their immediate supervisor, the employer or the employer's representative right away.
- The supervisor calls in the health and safety representative (or, failing that, a union representative or a worker chosen by the person refusing) to examine the situation.
- During the refusal the worker is deemed to be at work, and the employer may not have someone else do the job until a decision orders a return to work (except as allowed by sections 17 and 19).
- If the disagreement continues, a CNESST inspector can be called in; the inspector decides quickly whether there is a danger and may order a return to work or corrections.
Protection against reprisals
- The employer may not dismiss, suspend, transfer or otherwise penalize a worker for exercising the right to refuse.
- Exception: within 10 days of a final decision, a penalty is possible if the right was used abusively.
Workers' duties
- Learn the prevention program that applies to them.
- Take the necessary steps to protect their own health and safety, and not endanger others at or near the workplace.
- Undergo required health exams, help identify and eliminate risks, and cooperate with the health and safety committee or the site committee.
- Not work when their condition is a risk, including impairment by alcohol, drugs or cannabis.
- On a construction site, the Act itself states that impairment by alcohol, drugs or cannabis is a risk.
Employers' duties
- Take the necessary steps to protect workers' health, safety and physical and psychological integrity.
- Make sure work organization and methods are safe; supply safe equipment and keep it in good condition.
- Use methods to identify, control and eliminate risks.
- Inform workers properly about the risks of their job and provide appropriate training, coaching and supervision.
- Supply the required personal protective equipment free of charge and make sure workers use it.
- Take measures to protect workers exposed to physical or psychological violence, including domestic, family or sexual violence.
Study the Prevention principles, rights and duties rules as flashcards →
Other topics
- Construction sites: rules and organizationThe principal contractor, notices of opening, prevention programs and site committees, the mandatory 30-hour course, public safety, housekeeping and working alone.
- Personal protective equipmentHard hats, safety footwear, eye and face protection, gloves, clothing near moving parts, flotation devices and who pays for protective equipment.
- Manual handling and noisePreventing musculoskeletal injuries when lifting and carrying loads, and the noise limits, control measures and hearing protection rules.
- Electricity and lockoutGrounded or double-insulated tools, extension cords, and the lockout and energy-control rules for working in a machine's danger zone.
- Tools, machines and fire preventionMachine guards, grinding wheels, engines indoors, repairs on raised parts, temporary heating, welding and cutting, and fire extinguishers on site.
- Site traffic and vehiclesThe traffic plan, reversing manoeuvres and back-up areas, the site signaller, driver permits, horns and back-up alarms, and riding on equipment.
- Contaminants, asbestos and WHMISControlling airborne contaminants at the source, respirators, asbestos work categories, dust control, and WHMIS 2015 labels, safety data sheets and training.
- Fall protectionWhen protection is required, the order of protection measures, guardrails, warning lines, safety nets, harnesses, lanyards and anchors.
- Ladders and scaffoldsSetting up and using ladders and stepladders, when scaffolds are required, platforms and planks, erection, inspection, tying and use in bad weather.
- Lifting equipment for loads and workersRated loads, daily checks, rigging and tag lines, working under loads, signallers, minimum age, people lifts and mobile elevating work platforms (MEWPs).
- Excavations and confined spacesLocating utilities, shoring, spoil and vehicle setbacks, ladders and watchers in trenches, and the air-testing, ventilation and entry rules for confined spaces.