At which workplace are certified members not required?
JHSC Part One: When a JHSC is required and how it runs
Which workplaces need a committee or a representative, membership, co-chairs, meetings, minutes, postings, paid time and worker trades committees.
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Study reference: Ontario JHSC Part One sources (Oct 2026), Ch. 5 When a JHSC is required and how it runs — OHSA ss. 8–10; JHSC guide, About JHSCs, Members, Meetings
All 15 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
At which workplace are certified members not required?
- A hospital that regularly employs 1,000 workers year round
- A construction project with under 50 regular workers
- An office tower that regularly employs 75 workers in total
- A factory that regularly employs 300 workers on three shifts
How much paid preparation time is each member entitled to before a committee meeting?
- Exactly 15 minutes, no matter how long the agenda is
- None; preparation must be done on the member's own time
- At least one hour, or more if the committee decides
- A full day, paid only to the two co-chairs of the committee
At what size must most Ontario workplaces have a joint health and safety committee?
- 6 or more workers on any given day
- 20 or more regularly employed workers
- 50 or more workers, including part-time
- 100 or more workers in a single building
What is the minimum size of a JHSC where 50 or more workers are regularly employed?
- Ten members
- Two members
- Six members in total
- Four members
Does the OHSA set a quorum for JHSC meetings?
- Yes, only the co-chairs count toward the quorum
- No; the committee sets its own rules within the law
- Yes, all members must attend or the meeting is void
- Yes, exactly three members must attend every meeting
What must the committee do with minutes of its meetings?
- Send them to the local newspaper for publication
- Keep them and make them available to an inspector
- Keep them only if the employer asks for a copy
- Destroy them after each meeting for privacy reasons
When must a JHSC on a construction project set up a worker trades committee?
- Only when the ministry finds the main committee is not working
- When the project has fewer than 20 workers and lasts under a month
- Whenever a project has at least one unionized trade on the site
- When the project lasts three months or more and has 50 or more workers
How are the JHSC co-chairs chosen?
- Both by the employer, from among its senior managers only
- One by the ministry and one by the Workplace Safety and Insurance Board
- Both by a vote of all workers in the entire workplace
- One by the worker members and one by the management members
What must the employer post about the JHSC?
- Members' home addresses and phone numbers
- Members' salaries and wages
- Members' medical histories
- Members' names and work locations
In a unionized workplace, who selects the worker members of the JHSC?
- The employer's human resources department
- The trade union or unions
- The co-chair who represents management
- The ministry inspector for the area
What share of JHSC members must be workers who do not exercise managerial functions?
- At least a quarter
- At least half
- Exactly one-third
- None is required
How often must a JHSC meet, at minimum?
- Only when an injury happens
- At least once every week
- At least once a year, in January
- At least once every three months
A workplace regularly employs 12 workers and no designated substance regulation applies. What is required?
- A health and safety representative selected by the workers
- Nothing at all, since the workplace has fewer than 20 workers
- A certified member appointed by the employer from management
- A full JHSC with at least four members, half of them workers
A workplace with eight workers uses a substance covered by a designated substance regulation. What is required?
- A health and safety representative only
- A joint health and safety committee
- A union, by law
- Nothing extra at all
How long a term does the OHSA set for JHSC members?
- Exactly two years, and the term can never be renewed
- Six months, after which members must resign
- Life, unless the member leaves the employer
- None; the ministry recommends at least one year
When a JHSC is required and how it runs: 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 ↗
which workplaces
- 1 to 5 workers: no committee or representative needed unless a designated substance regulation applies.
- 6 to 19 workers: workers select one health and safety representative (s. 8); a JHSC is required if a designated substance regulation applies.
- 20 or more workers regularly employed: a JHSC is required (s. 9(2)); also construction projects with 20 or more workers expected to last three months or more, and workplaces under a Director's or Minister's order.
- The Minister may permit one committee for several workplaces (multi-workplace committee).
Membership
- Fewer than 50 workers: at least two members; 50 or more: at least four (s. 9(6)).
- At least half the members must be workers who do not exercise managerial functions, selected by the workers or their union (s. 9(7)–(8)); the employer selects the rest from people with managerial functions (s. 9(9)).
- Two co-chairs: one chosen by worker members, one by management members (s. 9(11)).
- Certified members are not required at workplaces with fewer than 20 regularly employed workers, at construction projects with fewer than 50 workers, or at projects lasting less than three months.
- Names and work locations of members are posted or available electronically (s. 9(32)).
- The Act sets no term of office; the ministry recommends at least one year, staggered.
Meetings and pay
- The committee meets at least once every three months, in person or virtually (s. 9(33)).
- Minutes are recorded and available to an inspector (s. 9(22)); the guide recommends co-chairs sign and post them.
- Each member gets at least one hour of paid preparation time per meeting, plus paid time for meetings, inspections, critical injury investigations and certification training (s. 9(34)–(36)).
- The Act sets no quorum; the committee makes its own rules consistent with the law.
Worker trades committee (s. 10)
- At a construction project that needs a JHSC, lasts three months or more and has 50 or more workers, the committee must establish a worker trades committee to tell the JHSC about trades workers' concerns.
Study the When a JHSC is required and how it runs rules as flashcards →
Other topics
- Certification and the internal responsibility systemHow JHSC certification works (Part One, Part Two, refresher, Chief Prevention Officer), what certified members do, and the internal responsibility system behind Ontario's law.
- The OHSA and how the law worksHow the Occupational Health and Safety Act, regulations, standards and guidelines fit together, key sector regulations, enforcement under Part VIII and penalties.
- Duties of the workplace partiesDuties of employers, supervisors, workers, owners, suppliers and corporate directors, the competent person, and the health and safety policy and program.
- Worker rights: know, participate, refuseThe right to know, the right to participate and the right to refuse unsafe work, the two-stage work refusal process, and protection from reprisals.
- JHSC powers and recommendationsWhat the committee may do: identify hazards, obtain information, recommend improvements, the employer's 21-day written response, consensus and co-chair recommendations, and inspector visits.
- Certified members and dangerous circumstancesWhat dangerous circumstances are, investigating complaints, bilateral and unilateral work stoppages, cancelling a direction and complaints of reckless use.
- Workplace violence and harassmentLegal definitions, policies, programs, risk assessments, the committee's role, reporting incidents, domestic violence and the Human Rights Code.
- Hazard recognition and categoriesHazard, injury and illness, the six hazard categories, the five contributing factors, states of matter, routes of entry and acute versus chronic effects.
- Workplace inspectionsWho inspects, how often, preparing and doing an inspection, reporting hazards to the committee and other ways to find hazards.
- Hazard assessment and exposure limitsMethods for assessing how serious a hazard is, exposure monitoring, the committee's right to be at the start of testing, and TWA, STEL and ceiling limits.
- Hazard control and evaluating controlsControlling hazards at the source, along the path and at the worker, the hierarchy of controls with examples, qualities of good controls and evaluating them.
- Reporting and investigating incidentsNotices of death, critical injury, lost-time injury and occupational illness, the critical injury definition, preserving the scene, and committee investigations.