---
title: "Internal responsibility system — the idea the whole Canadian regime rests on"
description: "What the internal responsibility system is, why Canadian OHS acts are written around it, and what it actually requires of employers, supervisors and workers."
term: "Internal responsibility system"
definition: "The principle that everyone in a workplace — employer, supervisor and worker — holds a share of responsibility for health and safety proportionate to their authority, and that the regulator's role is to support and audit that system rather than to run it."
alsoKnownAs:
  - "IRS"
jurisdiction: "Canada"
locale: "en-CA"
publishedOn: 2026-09-06
reviewedOn: 2026-09-06
canonical: "https://safeally.net/en-ca/glossary/internal-responsibility-system/"
sources:
  - label: "Occupational Health and Safety Act, R.S.O. 1990, c. O.1 — duties of employers, supervisors and workers"
    url: "https://www.ontario.ca/laws/statute/90o01"
    publisher: "Government of Ontario"
  - label: "Canada Labour Code, Part II — occupational health and safety"
    url: "https://laws-lois.justice.gc.ca/eng/acts/L-2/"
    publisher: "Justice Laws Website"
  - label: "Health and safety programs — the basics"
    url: "https://www.ccohs.ca/oshanswers/hsprograms/basic.html"
    publisher: "CCOHS"
---

# Internal responsibility system — the idea the whole Canadian regime rests on

The principle that everyone in a workplace — employer, supervisor and worker — holds a share of responsibility for health and safety proportionate to their authority, and that the regulator's role is to support and audit that system rather than to run it.

Canadian OHS statutes do not read like a code of practice, and that is
deliberate. They assign **duties by role** and then give workers three rights —
to know, to participate and to refuse — so that the workplace corrects itself
without an inspector present. That architecture is the internal responsibility
system, and it explains why the acts are short on prescription and long on
"every precaution reasonable in the circumstances".

## What it means in practice

- **Responsibility is proportional to authority, and it is not transferable.** A
  supervisor's duty does not lift the employer's; a worker's duty to follow
  procedure does not dilute either.
- **The three rights are the mechanism, not a slogan.** Information about hazards,
  a joint committee or representative through which to participate, and a
  protected right to refuse dangerous work. Remove one and the system stops
  functioning as designed.
- **The regulator audits the system.** An inspection is as much about whether the
  internal machinery is running — committee minutes, hazard reporting, corrective
  action — as about the guard that was missing.
- **It is the frame for a due diligence defence.** Showing that the system worked,
  and that you resourced and supervised it, is the evidence a court looks for.

## What it is not

**It is not self-regulation.** Duties are statutory, orders are enforceable and
prosecutions happen. The internal system is where compliance is produced; it is
not a substitute for the rules.

**It is not a document.** There is no "IRS policy" to write. It is visible in
whether a worker who reports a hazard gets an answer, and in how quickly.

**And it is not a shared duty in the European sense.** France, Spain and Italy
concentrate the obligation on the employer, with worker representatives consulted
rather than co-responsible. Translating a Canadian responsibility matrix into a
French organisation chart produces roles the Code du travail does not recognise —
and leaves the employer's own obligation looking delegated when it never can be.