---
title: "Supervisor — a legal role in Canadian OHS law, not a job title"
description: "How Canadian OHS acts define a supervisor, why the definition catches people who were never appointed one, and the duties and personal liability that come with it."
term: "Supervisor"
definition: "A person who has charge of a workplace or authority over a worker. The status follows the authority actually exercised, not the job title on the contract, and it carries personal statutory duties."
alsoKnownAs:
  - "Person in charge"
  - "Competent supervisor"
jurisdiction: "Canada"
locale: "en-CA"
publishedOn: 2026-09-06
reviewedOn: 2026-09-06
canonical: "https://safeally.net/en-ca/glossary/supervisor/"
sources:
  - label: "Occupational Health and Safety Act, R.S.O. 1990, c. O.1 — definition and duties of a supervisor"
    url: "https://www.ontario.ca/laws/statute/90o01"
    publisher: "Government of Ontario"
  - label: "Health and safety awareness training under Regulation 297/13"
    url: "https://www.ontario.ca/page/health-and-safety-training"
    publisher: "Government of Ontario"
  - label: "Occupational Health and Safety Code, Part 2 — hazard assessment, elimination and control"
    url: "https://search-ohs-laws.alberta.ca/legislation/occupational-health-and-safety-code/part-2-hazard-assessment-elimination-and-control/"
    publisher: "Government of Alberta"
---

# Supervisor — a legal role in Canadian OHS law, not a job title

A person who has charge of a workplace or authority over a worker. The status follows the authority actually exercised, not the job title on the contract, and it carries personal statutory duties.

The definition is functional. A lead hand who assigns tasks, a working foreman, a
shift senior, a project engineer who directs a crew: if they have charge of a
workplace or authority over workers, they are supervisors in law, whether or not
anybody wrote it down. This is the single most common surprise in a prosecution —
**the charge lands on someone whose business card says something else.**

## What it means in practice

- **Duties are personal.** Ensure workers work as required by the regulations and
  use the required equipment, advise workers of hazards, provide written
  instructions where required, and take every precaution reasonable in the
  circumstances.
- **Competence is defined, and it has three parts** in most acts: qualified
  through knowledge, training and experience; familiar with the applicable
  legislation; and knowledgeable about the actual and potential hazards of the
  work.
- **Awareness training is mandatory** for supervisors in several jurisdictions,
  with a record kept — and it is basic awareness, not the competence the act
  requires. The two are often confused.
- **The employer must resource the role**, because a supervisor with no time, no
  authority to stop work and no budget is evidence of a system that was designed
  to fail.

## What it is not

**It is not a manager.** Seniority does not create the status and its absence does
not remove it. A director who never sets foot on the floor may not be a
supervisor; the person who runs the night shift is.

**It is not a way to move the employer's duty.** Appointing supervisors adds
duties; it never subtracts the employer's own.

**And it is not the French _encadrement_ or the Italian _preposto_ as such.** The
Italian preposto is the closest — a defined figure with its own duties and
mandatory training — but it is appointed and, since 2021, must be identified in
writing. The Canadian supervisor is defined by what they do. One is a
designation, the other is a finding of fact.