Duties of supervisors and the competent supervisor

Dev's predecessor on night sanitation had been a capable, well-liked lead hand who was promoted when the old supervisor retired. He was never trained as a supervisor. He knew lockout was required, and he knew the crew skipped it on the spiral when they were behind. He told the investigators he had raised the time pressure with day-shift management twice, verbally, and been told to 'make it work'. He had not written it down. He had not stopped the work. After the injury he was moved off nights, and for weeks he worried that he might be charged personally.

His story is the reason this lesson exists. Supervisors sit at the point where the employer's promises meet the real work. The law expects a great deal of them, often without saying so in plain words, and most are never told what it is. This lesson sets out what the law expects of supervisors, what makes a supervisor competent, and the practical habits that let a supervisor meet those expectations.

Who is a supervisor?

In law, a supervisor is defined by what they do, not by their job title. If you direct the work of others, decide how a job will be done, assign tasks or have authority to stop work, you are likely to be treated as a supervisor, whether your title is supervisor, lead hand, foreman, coordinator or team leader. Nova Scotia's Act does not set out a separate list of supervisor duties the way some provinces do, but supervisors are bound by the employer's duties when they act for the employer, by the duties every worker has, and by the duty in the Act to make sure work they direct complies with the law. Other provinces, such as Ontario, spell supervisor duties out in detail, and those lists are a useful guide to what courts across Canada expect.

The practical test is authority. Dev could assign his crew to tasks, decide the order of cleaning, approve or refuse overtime, and stop a machine. Those powers carried the duty to use them for safety. His predecessor had the same powers. He used them to keep the schedule, not to protect his crew.

What the law expects of supervisors

Taken together, the duties that apply to supervisors in Canadian and US law can be summarized in six practical expectations. They are not a legal checklist, but a supervisor who meets all six is doing what regulators and courts look for.

1. Know the hazards and the law that applies. A supervisor must know the hazards of the work they direct, the controls that are supposed to be in place, and the legal requirements that apply. Ignorance is not a defence: a supervisor who did not know that lockout was required on a machine he oversaw is in a worse position, not a better one, than one who knew and tried to enforce it.

2. Tell workers about the hazards. Supervisors must make sure each worker knows the hazards of their job and how to work safely, especially new and young workers, workers new to a task, and temporary or agency workers. This is more than handing out a procedure. It means showing, watching the worker do it, and checking again later.

3. Make sure workers follow the rules and use the controls. Supervisors must see that procedures are followed and that required protective equipment and devices are used. This means being present, checking, correcting on the spot and following up. A supervisor who knows a rule is routinely broken and does nothing is, in law, allowing the breach.

4. Take every reasonable precaution. Beyond specific rules, supervisors must use judgment to protect workers: noticing new hazards, stopping work that cannot be done safely, and not directing anyone to work in a way that endangers them. If the schedule cannot be met safely, the supervisor's duty is to the worker, not the schedule.

5. Respond to concerns, reports and refusals. When a worker raises a concern, reports a hazard or refuses unsafe work, the supervisor must respond promptly and properly: investigate, fix what can be fixed, escalate what cannot, and never retaliate. Lesson 5 covers refusals in detail.

6. Keep records. Supervisors should record what they do: inspections, training and coaching, corrections, hazards reported and how they were resolved. Records are how a supervisor shows, later, that the other five duties were met. Lesson 11 covers documentation.

The competent supervisor

Nova Scotia's Act uses the idea of a competent person: someone qualified because of knowledge, training and experience to do the assigned work in a way that ensures health and safety, who is familiar with the legislation that applies to the work, and who has knowledge of any potential or actual danger in the workplace. Employers must provide competent supervision. Competence therefore has three ingredients, and a supervisor needs all of them.

• Knowledge: of the work, the hazards, the controls and the law that applies.
• Training: in supervision itself, not only in the trade, including how to assess hazards, coach, investigate and respond to refusals.
• Experience: enough time doing and watching the work to recognize when something is wrong.

Dev's predecessor had plenty of experience and knowledge of the work, but no training in supervision or in the law. He did not know that his knowledge of skipped lockout made the company responsible, or that he had the authority, and the duty, to stop the work. He thought raising it verbally with management was all he could do. Competence is not only about knowing the job; it is about knowing what the role requires.

Authority to act

Competence also needs authority. The OSHA definition of a competent person explicitly includes authorization to take prompt corrective measures, and the same idea runs through Canadian law: a supervisor cannot be expected to control hazards they have no power to fix. For employers, that means giving supervisors real authority to stop work, a small budget for immediate fixes, and a clear and fast path to escalate. For supervisors, it means using that authority, and putting it in writing when the authority is not enough.

After the injury, Rachel gave every supervisor at Harrowgate Foods Ltd. a written statement of their authority: to stop any work they believed was unsafe, without needing approval and without penalty for lost production; to spend up to a set amount on immediate safety fixes; and to escalate directly to the plant manager or Elena at any hour. Dev kept the card in his pocket. He used the stop-work authority twice in his first month, both times on the spiral when the incoming crew had started cleaning before lockout was verified.

Supervisors and personal liability

Supervisors in Canada can be charged personally under provincial safety law, and in rare cases under the Criminal Code. Nova Scotia's administrative penalty schedule has separate amounts for supervisors, and prosecutions of supervisors, while less common than prosecutions of employers, do happen, usually where the supervisor knew of a serious hazard and directed or allowed work to continue. Lesson 9 covers criminal liability. The best protection is not a lawyer but the habits in this lesson: know, tell, check, act, respond and record. A supervisor who does those things and writes them down is very unlikely to be found at fault, and is far more likely to have prevented the incident in the first place.

A supervisor's first 30 days

Elena gave Dev a list of things to do in his first month, and tracked them with him every week. The script below shows the plan and how far he had got by the end of week three.

# Dev's first-30-days plan and status at the end of week 3.
plan = [
    ("Read the Act's duties, refusal and reprisal sections", 1, True),
    ("Walk every task with the crew and note hazards", 1, True),
    ("Review lockout procedure for each machine with the crew", 2, True),
    ("Check each worker's training against the machines they clean", 2, True),
    ("Verify lockout personally on every spiral clean", 1, True),
    ("Agree authority card with the plant manager", 1, True),
    ("Attend a committee meeting", 3, True),
    ("Start a supervisor log for inspections and coaching", 1, True),
    ("Complete a supervisor investigation course", 4, False),
    ("Hold first crew safety talk on refusals and reporting", 3, False),
]
done = [p for p in plan if p[2]]
late = [p for p in plan if not p[2] and p[1] <= 3]
print(f"done {len(done)} of {len(plan)}")
for task, week, ok in plan:
    print(f"week {week}  {'done' if ok else 'open':<5} {task}")
print("overdue:", [t for t, w, ok in late])

done 8 of 10
week 1  done  Read the Act's duties, refusal and reprisal sections
week 1  done  Walk every task with the crew and note hazards
week 2  done  Review lockout procedure for each machine with the crew
week 2  done  Check each worker's training against the machines they clean
week 1  done  Verify lockout personally on every spiral clean
week 1  done  Agree authority card with the plant manager
week 3  done  Attend a committee meeting
week 1  done  Start a supervisor log for inspections and coaching
week 4  open  Complete a supervisor investigation course
week 3  open  Hold first crew safety talk on refusals and reporting
overdue: ['Hold first crew safety talk on refusals and reporting']

The overdue item was the crew talk on refusals, which Dev had put off because he was unsure how to explain the process. Elena helped him plan it for the following week, using the material in lesson 5. The supervisor course was scheduled for week four, so it was not yet late.

New, young and temporary workers

Supervisors' duties are heaviest for workers who are new to the job, new to the task, young or temporary. Injury statistics across Canada consistently show that workers in their first months on a job are far more likely to be hurt than experienced workers, whatever their age. Many provinces put specific orientation duties on employers for new and young workers, and courts expect supervisors to give these workers closer attention. At Harrowgate Foods Ltd., seasonal and agency workers arrived at the distribution centre every autumn for the holiday rush, and many had never driven a pallet jack or worked in a freezer.

Dev applied the same thinking on nights. Before any new or agency worker cleaned a machine, he paired them with an experienced crew member for at least three shifts, walked them through the lockout points himself, watched them perform a full lockout and verification, and signed off only when they could explain each step back to him. It took more of his time in the first week. It was also the clearest evidence he could have that he had told them about the hazards and made sure they could work safely.

Supervising across shifts

Night and weekend supervisors face a particular challenge: the people who can approve money, change schedules and fix equipment are usually at home. That makes the supervisor's own judgment and authority more important, not less. It also makes the handover between shifts a critical safety moment. Dev started a written shift handover with the day supervisor: open hazards, equipment out of service, refusals or concerns raised, and anything that needed a decision. Problems that had been passed on verbally, and forgotten, now arrived in writing and were followed up.