JHSC Part One overview

JHSC Part One: Duties of the workplace parties

Duties of employers, supervisors, workers, owners, suppliers and corporate directors, the competent person, and the health and safety policy and program.

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Duties of the workplace parties · Question 1Score 0/0

Which action is a worker forbidden to take under the OHSA?

Study reference: Ontario JHSC Part One sources (Oct 2026), Ch. 3 Duties of the workplace parties — OHSA ss. 1, 25–32

All 14 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

  1. Which action is a worker forbidden to take under the OHSA?

    1. Asking the JHSC worker member a question about safety rules
    2. Reporting a hazard to the supervisor on the very same day it is found
    3. Wearing the protective equipment the employer has provided
    4. Removing a required protective device without a temporary replacement
  2. Which general duty does the OHSA place on every employer?

    1. Pay for every worker's personal health insurance premiums
    2. Guarantee that no worker is ever injured in any circumstance
    3. Take every reasonable precaution to protect a worker
    4. Hire a full-time safety engineer at every workplace site
  3. A company leases a scissor lift to an employer. What must the supplier ensure?

    1. It is painted in company colours and has the supplier's logo
    2. It is in good condition and complies with the Act and regulations
    3. It is used only by workers who have a car driver's licence
    4. Nothing; all duties pass to the employer once the lift is delivered
  4. A supervisor knows that a floor area becomes slippery when a pump leaks. What must the supervisor do?

    1. Wait for the JHSC to notice it
    2. Advise workers of the danger
    3. Keep quiet to avoid alarm
    4. Tell only the maintenance crew
  5. A worker sees that a machine guard is missing. What must the worker do?

    1. Report it to the employer or supervisor
    2. Ignore it if the machine still runs
    3. Fix it at home over the weekend instead
    4. Post about it on social media first
  6. In what languages must the employer post the OHSA and ministry explanatory material?

    1. French only, in every Ontario workplace
    2. No posting is required if workers can read
    3. English and the majority language of the workplace
    4. Any language the employer prefers to use for notices
  7. Under the OHSA, who is a supervisor?

    1. Any worker who has been employed for more than one year
    2. Only a person whose job title includes the word "supervisor" in it
    3. Only a member of the employer's senior management team
    4. A person who has charge of a workplace or authority over a worker
  8. When an employer appoints a supervisor, who must it appoint?

    1. The longest-serving worker
    2. A member of the JHSC
    3. Any worker who volunteers
    4. A competent person
  9. How often must an employer review its written occupational health and safety policy?

    1. Only when an inspector asks
    2. Only when the owner changes
    3. At least once a year
    4. Once every five years
  10. What duty does the OHSA place on directors and officers of a corporation?

    1. Take all reasonable care that the corporation complies
    2. Sit on the JHSC as the employer's certified member at all times
    3. Personally inspect every workplace at least once every single week
    4. None; only the corporation itself has any duties under the Act
  11. Which workplaces are exempt from the written health and safety policy requirement, unless otherwise prescribed?

    1. Those with five or fewer regularly employed workers
    2. Those with a JHSC that meets every single month
    3. Those with fewer than 50 regularly employed workers
    4. Those in the office and retail sectors of Ontario
  12. Which is a supervisor's duty under the OHSA?

    1. Ensure workers use the protective equipment the employer requires
    2. Certify JHSC members after they complete their Part One training
    3. Write the employer's annual health and safety policy alone
    4. Approve all inspector orders before they take effect
  13. Which description matches the OHSA definition of a competent person?

    1. Qualified to organize the work, knows the law, and knows the dangers
    2. Is a member of the JHSC and has attended at least one meeting
    3. Has worked at the company for at least five continuous years
    4. Has a university degree in any subject and two good references
  14. What must an employer do to support the JHSC's work?

    1. Chair every single committee meeting itself
    2. Limit meetings to 15 minutes
    3. Assist and co-operate with the committee
    4. Approve each member's vote

Duties of the workplace parties: 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 ↗

employer duties

  • Provide equipment, materials and protective devices and keep them in good condition; follow prescribed measures.
  • Provide information, instruction and supervision to protect workers (25(2)(a)).
  • Appoint a competent person as supervisor (25(2)(c)); the employer may be the supervisor if competent.
  • Acquaint workers with hazards in the work and in handling, storing, using and disposing of agents (25(2)(d)).
  • Assist and co-operate with the committee and the health and safety representative (25(2)(e)).
  • Take every precaution reasonable in the circumstances for the protection of a worker (25(2)(h)).
  • Post a copy of the Act and ministry explanatory material in English and the workplace's majority language (25(2)(i)).
  • Prepare and review at least annually a written health and safety policy, keep a program to implement it, and post the policy (25(2)(j)–(k)); not required where five or fewer workers are regularly employed.
  • Give the committee the results of occupational health and safety reports (25(2)(l)).

definitions

  • A "competent person" is qualified by knowledge, training and experience to organize the work, knows the Act and regulations that apply, and knows the potential or actual dangers.
  • A "supervisor" is a person who has charge of a workplace or authority over a worker.

supervisor duties

  • Ensure workers work in the manner and with the protective devices and procedures the law requires, and use the equipment the employer requires.
  • Advise workers of any potential or actual danger the supervisor knows about.
  • Provide written instructions where prescribed, and take every precaution reasonable in the circumstances.

worker duties

  • Work in compliance with the Act and regulations; use or wear required equipment and protective devices.
  • Report missing or defective equipment and any hazard or contravention to the employer or supervisor.
  • Do not remove or disable protective devices, do not work in a way that endangers anyone, and no pranks, contests or rough conduct.

owners, suppliers, directors and officers

  • Owners must ensure prescribed facilities are provided and maintained (s. 29).
  • A supplier who leases equipment must ensure it is in good condition and complies with the law (s. 31).
  • Every director and officer of a corporation must take all reasonable care that the corporation complies with the Act, regulations and orders (s. 32).

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