At What Height Is Fall Protection Required in Canada?

Last updated: March 19, 2026

Your crew is framing a second-storey wall at 2.5 metres. The foreman says fall protection isn't required until 3 metres. Is he right? In most provinces, technically yes. But if that work area is permanent, if there's rebar below, or if you're in Ontario near an open edge, that foreman just earned your company a stop work order.

Fall protection in Canada is required when a worker can fall 3 metres (10 feet) or more in most jurisdictions. That's the standard threshold from the federal Canada Occupational Health and Safety Regulations right down to most provincial codes. But the exceptions, and there are many, can drop that trigger height to as low as 1.2 metres depending on your province, the work surface, and what's below your crew.

Here's what each province actually requires, with the regulation sections you can point to during your next toolbox talk or COR audit.

The 3-Metre Rule and Why It's Not That Simple

Every Canadian province and territory sets 3 metres as the general trigger height for fall protection. The federal Canada Occupational Health and Safety Regulations (SOR/86-304, Section 12.07) establish this baseline, and every province follows it.

But here's what trips up contractors across the country: the 3-metre rule only applies to the "general" scenario. Every single province adds exceptions that lower the threshold based on specific conditions. A worker standing 2 metres above an open chemical vat needs fall protection in every jurisdiction in Canada. A worker on a permanent platform at 1.5 metres in Alberta needs fall protection. A worker at 2.4 metres near an open edge on an Ontario construction site needs a guardrail system.

Most contractors think fall protection kicks in at 3 metres. Period. They're wrong. And the fines for getting it wrong start at $10,000 per day in Alberta and reach $1.5 million for corporations in Ontario.

Province-by-Province Fall Protection Heights

The following table shows the general height threshold and key exceptions for each province and territory. Bookmark it. Print it. Tape it inside your site trailer.

Notice the pattern: every province starts at 3 metres, but every province also has situations where the threshold drops. The safest assumption is that if a fall could hurt someone, fall protection is required, regardless of height.

When Fall Protection Kicks In Below 3 Metres

The exceptions matter more than the rule. Here are the four most common scenarios where fall protection is required below the standard 3-metre threshold:

Hazardous surfaces below the work area

Every province in Canada requires fall protection at ANY height if the surface below could cause greater injury than landing on a flat surface. That includes operating machinery, water deep enough to drown in, open chemical tanks, pits with exposed rebar, and bulk material that could shift and bury a worker. A 1.5-metre fall into an open concrete form with protruding rebar is more dangerous than a 4-metre fall onto packed ground.

Permanent work areas in Alberta (1.2 metres)

Alberta's OHS Code, Section 139(1)(d), requires fall protection at permanent work areas when a worker could fall more than 1.2 metres but less than 3 metres. This catches mezzanines, loading docks, permanent platforms, and elevated workstations that aren't protected by guardrails. If your crew works at the same elevated location regularly, check whether the 1.2-metre threshold applies.

Open-edge guardrails in Ontario construction (2.4 metres)

Ontario's O. Reg. 213/91, Section 26.3(1), requires a guardrail system at any open edge where a fall of 2.4 metres or more could occur. This applies to floor edges, roof edges, and open sides of work surfaces on construction projects. It's a guardrail-specific requirement: the general fall protection threshold is still 3 metres, but guardrails must go up earlier.

Wheelbarrow and equipment paths (1.2 metres)

Ontario, Quebec, and Manitoba all lower the threshold to 1.2 metres for work areas used as paths for wheelbarrows or similar equipment. The logic is simple: a worker pushing a loaded wheelbarrow near an edge has reduced ability to catch themselves. If your site has elevated ramps or paths for material transport, this exception likely applies.

Here's the blunt truth: a 2-metre fall onto a flat surface breaks bones. A 2-metre fall onto rebar, into machinery, or into water kills. The height thresholds in the regulations are legal minimums, not physics-based safety margins. If your crew is working at height, even below 3 metres, and you haven't assessed the fall hazard, you're gambling with their bodies and your business.

What About Scaffolds, Ladders, and Roofs?

The general fall protection height thresholds apply, but specific types of work at height have additional rules:

Scaffolding

Scaffolding falls under both the general fall protection requirements and scaffold-specific regulations. In every province, workers on scaffolds above 3 metres need fall protection, but scaffold regulations also require guardrails, toeboards, and mid-rails regardless of height in many cases. Alberta's OHS Code Part 23 and BC's OHS Regulation Part 13 both have detailed scaffold requirements that go beyond the general fall protection rules. Our scaffolding safety guide for contractors breaks down these requirements in detail.

Ladders

The federal regulations require fall protection on ladders at 3 metres if the worker can't maintain three-point contact (both hands and one foot, or both feet and one hand). In practice, this means any ladder work where the worker needs both hands for the task requires fall protection above 3 metres. Fixed ladders over a certain height require ladder cages or personal fall arrest systems. Check your provincial regulation for specific ladder fall protection requirements.

Roofs

Roof work is one of the highest-risk fall scenarios in construction. The general 3-metre threshold applies, but several provinces add slope-based triggers. In British Columbia, Section 20.75 requires personal fall protection on roofs with a slope of 8:12 or greater. The Yukon requires fall protection on roofs with a 2:3 slope or steeper. For flat or low-slope commercial roofs, the standard height threshold applies, but remember: if the roof edge is unguarded and 3 metres or more above grade, fall protection is required. Period.

When building your site-specific safety plan, address each of these work-at-height scenarios separately. A blanket "fall protection at 3 metres" policy won't cover the exceptions that apply to your site.

What Happens If You Get the Height Wrong?

Falls from height are the leading cause of workplace death on Canadian construction sites. Regulators don't treat fall protection violations lightly.

Alberta: OHS fines are capped at $10,000 per day per violation under the OHS Act. But violations stack. In 2025, Graham Construction was fined $110,000 for workplace safety failures. Fall protection is one of the most commonly cited violations during Alberta OHS inspections.

British Columbia: WorkSafeBC regularly issues penalties in the $15,000 to $75,000 range for fall protection violations. Their penalty database, updated monthly, consistently shows fall protection as the most frequent violation category. A single fall protection infraction in early 2025 resulted in an $18,113 penalty.

Ontario: Under the Occupational Health and Safety Act, individuals can face fines up to $100,000 and corporations up to $1,500,000 for each offence. Directors and officers can face personal liability, including imprisonment up to 12 months.

Beyond fines, fall protection failures trigger stop work orders that shut your site down until the violation is corrected. That costs you every day your crew sits idle, plus the reputation damage with the GC who hired you.

And if you're pursuing or maintaining COR certification, fall protection is a core audit element. A fall protection program that doesn't match your provincial requirements is an audit finding that can delay or prevent certification, which means you can't bid on the work that requires it.

If your safety program hasn't been reviewed against current fall protection regulations, a 30-minute assessment can identify the gaps before an inspector does. Safety Evolution offers a free safety assessment that includes fall protection compliance as part of the review.