Internal responsibility system
The idea behind Canadian safety law that everyone in a workplace shares responsibility for safety, with the most falling on those with the most control.
Also called: IRS, shared responsibility for safety
What internal responsibility system means
The internal responsibility system is the idea that safety is the job of everyone inside the workplace, not just the government inspector. The employer, supervisors and workers each have duties, and the more authority and control a person has, the more responsibility they carry.
It is not a form or a program you buy. It is the way safety is supposed to work day to day: workers report hazards, supervisors act on them, owners provide the resources and training, and a committee or representative helps check the system is working. Inspectors are a backstop for when it fails.
For a small business owner, the practical message is that you cannot hand safety off entirely. You can share tasks, but you remain responsible for making sure the system works. Ontario has published results of an inspection initiative that looked at new small business registrations and the internal responsibility system.
How it works
Think of it as three layers. Workers follow safe procedures, use the protective equipment provided, and report hazards and injuries. Supervisors make sure their crews know the hazards, follow the rules and are corrected when they do not. The employer sets up the system: hazard assessments, policies, training, equipment, supervision and a way to fix what workers report.
A committee or health and safety representative adds a fourth part. They are not responsible for safety in place of the employer. Their role is to watch, inspect, hear concerns and make recommendations, so problems surface and get fixed.
A healthy system has a few clear signs. Workers know how to report a hazard and are not afraid to. Reports get a response, in writing for anything serious. Supervisors are trained for that part of their job, not just promoted because they are good at the work. Records exist for inspections, training and incidents. When something goes wrong, the question is 'what in our system let this happen?', not just 'who messed up?'
Signs it is not working: the owner hears about hazards only after an injury, supervisors tell people to skip steps when it is busy, the committee never meets, workers bring concerns straight to an inspector because nobody inside listens, and the same incident keeps happening.
Is it the same in every province?
The internal responsibility system is a principle that underlies health and safety laws across Canada. It is not usually a separate legal requirement; it shows up in the duties each provincial act places on employers, supervisors and workers, and in the role of committees and representatives.
Example: Fixing a repeat problem at a warehouse
Kim runs a small distribution warehouse in Brampton, Ontario, with 18 staff. Twice in a month, a pallet jack has run over someone's foot near the loading dock.
Instead of just warning the two workers, Kim asks the health and safety representative to walk the dock with her and a supervisor. They find the walkway lines have faded and drivers cut through the staging area to save time. Kim repaints the lines, the supervisor briefs each shift and checks the walkway for two weeks, and workers are asked to report anyone cutting through. Each person's part is clear, and the incidents stop.
Onboarding checklists in Staffkin
A Staffkin onboarding checklist can include who to report hazards to and who the safety representative is, so new hires know their part from day one.
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Questions about internal responsibility system
Is the internal responsibility system a law?
It is a principle rather than a single rule. It is reflected in the duties that provincial safety laws give employers, supervisors and workers.
If workers share responsibility, am I off the hook?
No. The person with the most control over the workplace, usually the employer, carries the most responsibility.
Where does the health and safety committee fit?
It monitors and advises. It helps the system work but does not take over the employer's duties.
Related terms
Official sources
General information for Canadian employers, not legal advice. Rules differ by province and territory and change over time, so check with your provincial employment standards office (or the federal Labour Program if you are federally regulated) before you rely on it. See employment standards by province.
Checked against official sources on 4 November 2026.