Ladder Safety Requirements in Canada — Rules & CSA Z11

Falls from ladders are one of the most persistent causes of serious workplace injury in Canada 7. That is why ladder safety is not left to common sense. All Canadian jurisdictions regulate it: who must be instructed, how a ladder must be set up, and which standard a ladder must be built to. The requirements differ from one jurisdiction to the next. This guide covers those requirements in plain terms: the federal rules, each province and territory's provisions, and CSA Z11 and its ladder grades. It also covers the set-up numbers every worker is expected to know: the 4-to-1 rule, three-point contact, and the 1-metre extension rule.

What are ladders?

A ladder is a vertical or inclined structure with rungs or steps, used to climb to and work at a height that cannot be reached from the ground. Ladders are used on construction sites, in warehouses, on farms, in maintenance work and at home, for tasks such as painting, repairs, cleaning and inspections.

What are the main types of ladders?

CSA Z11 sets the design, performance, test and marking requirements for portable ladders 6. Six types account for most workplace use:

• Straight ladders (also called single ladders). One fixed section, leaned against a wall, roof edge or other support. Several jurisdictions also cap how long a portable ladder may be. A single ladder is limited to 9 m in Saskatchewan, Manitoba, the Northwest Territories and Nunavut, for example 26,13,16,18. Yukon sets a maximum length for each ladder type 27.
• Extension ladders. Two or more sliding sections that lock together to reach greater heights; New Brunswick, for instance, limits them to three sections and requires a minimum 1 m overlap 14.
• Step ladders. Self-supporting, with a hinged back, so they need no wall to lean on. Common indoors for painting, cleaning and changing light fittings.
• Platform ladders. Step ladders with a large standing platform at the top, used where a worker stands in one place for a while, such as warehouse shelving.
• Mobile ladder stands and platforms (rolling ladders). Wheeled units that move along a run of shelving, used in stockrooms, libraries and parts departments. The standard that applies to these depends on the equipment and the jurisdiction — New Brunswick, for example, recognizes ANSI A14.7 for mobile ladder stands and mobile ladder stand platforms rather than CSA Z11 14.
• Specialty ladders. Roof ladders, telescoping ladders and combination ladders that convert between configurations for a specific job.

Whichever type you use, the grade printed on the label decides what the ladder may carry, and the rules below decide how it may be set up and climbed.

What are the main hazards when working with ladders?

Seven hazards account for nearly every ladder incident:

• Falls. The Canadian Centre for Occupational Health and Safety (CCOHS) describes falls from portable ladders as a major source of serious injury 7. Most of the rules that follow exist to prevent them.
• Tip-overs. A ladder that is not on firm, level footing, is not secured top and bottom, or is loaded beyond its grade can go over sideways or backwards.
• Electrical contact. Overhead power lines and live equipment. Several jurisdictions go further and ban the ladder itself. Metal or wire-bound ladders may not be used near exposed energized conductors in Prince Edward Island (s. 23.1(3)(b)) 24 and in the Northwest Territories and Nunavut (s. 259(2)(c)) 16,18, for example.
• Structural failure. Cracked or bent rails, broken or missing rungs, worn feet, damaged locks and spreaders. This is what the pre-use inspection is looking for. Who carries out the ladder inspection depends on the jurisdiction: federally a qualified person makes a visual inspection before each shift (s. 3.6) 3, Nova Scotia requires a competent person to inspect before each use and annually (s. 148(1)(d)) 17, and Yukon lists the pre-use inspection among the worker's duties (s. 10.29) 27.
• Overreaching. Leaning out past the side rails moves your weight off the ladder's base and is one of the fastest ways to tip it 23.
• Improper use. Standing on the top rungs or the top cap, using a ladder as a work platform or a plank, or using a ladder for work it was never designed for.
• Environmental conditions. Wind, rain, ice, mud, extreme temperatures and poor light, all of which change how a ladder behaves on the ground and underfoot.

What is CSA Z11, the portable ladder standard?

CSA Z11, Portable ladders, is Canada's national standard for how portable ladders are designed, built, tested and marked. The current edition is CSA Z11-18 (reaffirmed 2022) — the fifth edition, superseding the 2012, 1981, 1969 and 1967 editions 6. It is where ladder grades come from. The grade is marked on the ladder's label along with its intended use, and it sets the load rating: the weight the ladder is built to carry, which has to cover the worker together with their tools and materials 8.

What are the CSA ladder grades and duty ratings?

The five CSA ladder grades and their duty ratings run from Grade 3 (light duty, 200 lb) to Grade 1AA (special duty, 375 lb):

The grade matters legally, not just practically. Nova Scotia bans Grade 3 portable ladders from workplaces outright 17, and Ontario's construction regulation accepts only Grade 1, 1A or 1AA ladders on a project 20. British Columbia, Newfoundland and Labrador and Yukon require manufactured ladders to be marked for grade and used accordingly 12,15,27.

Which edition applies to your ladder depends on where you are and when it was made:

• The federal Canada Occupational Health and Safety Regulations (COHSR) still name the 1981 edition (CAN3-Z11-M81) for federally regulated workplaces 4.
• Alberta and Yukon pin the same 1981 designation 11,27.
• New Brunswick and Ontario's construction regulation name Z11-12 14,20.
• Manitoba names the current Z11-18 13.
• Nova Scotia adopts "the latest version" 17.
• British Columbia and Quebec require the edition that applied when the ladder was manufactured 12,25.

Some jurisdictions also recognize specified ANSI A14 standards — Alberta, Manitoba and New Brunswick among them — though the standard and edition named differ. In practice: buy ladders certified to the standard your jurisdiction names, check the grade on the label, and match the grade to the work. Each provision named here is linked in the provincial table further down.

What are the main ladder safety rules?

Four numbers come up in nearly every Canadian ladder regulation — these are the rules inspectors look for. The figures below are the common shape of each rule; the exact wording that binds you is your own jurisdiction's, in the provincial table below.

• The 4-to-1 rule (about 75°).
  An unsecured single or extension ladder is set one unit out from the wall for every four units of height. Saskatchewan, the Northwest Territories and Nunavut state it that way directly: in the territories' words, "the slope of the ladder is one horizontal to four vertical". Manitoba caps the slope at the same 1:4, and British Columbia expresses the same set-up as an approximate 75° angle.
  Other jurisdictions regulate the base distance as a proportion of ladder length instead. The federal COHSR, Ontario and Quebec require the base to sit between one-quarter and one-third of the ladder's length from the wall. Alberta and Prince Edward Island cap it at no more than one-quarter. Alberta measures the quarter against the distance from the ladder's base to its point of contact; on PEI the cap lifts where the top is secured. A one-quarter-to-one-third range is not mathematically identical to a strict 4-to-1 slope, so set up to the provision that applies where you work.
• Three-point contact.
  Two hands and one foot, or two feet and one hand, on the ladder at all times 7. The rule is required in so many words in Saskatchewan, in Manitoba for portable ladders other than stepladders, in Newfoundland and Labrador, and in the Northwest Territories and Nunavut. It is required federally on fixed ladders, with tools carried in a pouch or holster, not in your hand. Nova Scotia's rules name it for any work above 1 m.
• The 1-metre extension rule.
  A ladder used to reach a landing, platform or roof must extend above it. The figure is 1 m, or about 1 m, in most jurisdictions (Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Saskatchewan and the territories). It is 900 mm in Ontario construction and Quebec, 914 mm (3 ft) on PEI, and "at least three rungs" federally.
• Stay off the top rungs.
  How many rungs are off limits depends on the jurisdiction and the type of ladder. Alberta, Saskatchewan, Manitoba, Newfoundland and Labrador, the Northwest Territories and Nunavut prohibit working from the top two rungs of a portable ladder. Federally, in Nova Scotia, on Prince Edward Island and in Yukon the restriction is the top three rungs of a single or extension ladder. The federal rules separately prohibit the top two steps of a stepladder, and Ontario bans the top cap, top step and pail shelf of step-ladders. Check your own provision, and follow the manufacturer's design limits in every case.

Whether fall protection is needed on a ladder depends on the jurisdiction and the height. Alberta, for example, requires fall arrest where a worker may fall 3 m or more, with a three-point-contact exception for short light-duty tasks (s. 137) 11. Check your own jurisdiction's fall protection rules before working at height from a ladder.

And the rule behind the rules: pick the right grade for the job, inspect before use, and secure the ladder — top and bottom — whenever the work or its length demands it.

What is the federal ladder safety legislation?

For federally regulated employers, the Canada Labour Code sets the duty. The employer must "provide, in the prescribed manner, each employee with the information, instruction, training and supervision necessary to ensure their health and safety at work" (s. 125(1)(q)) 1. The COHSR make it ladder-specific. Portable ladders are "temporary structures" under Part III, and these rules apply:

• No employee may use a portable ladder unless they have been trained and instructed in its safe and proper use (s. 3.5) 2.
• A qualified person must visually inspect the ladder before each shift (s. 3.6) 3.
• Commercially manufactured portable ladders must meet CSA Standard CAN3-Z11-M81 (s. 3.11(1)) 4. That is the 1981 edition, which the regulation still incorporates by name.
• A portable ladder must be securely fastened in place (s. 3.11(2)(b)) 4. Only where the location or the work makes that impossible must the ladder instead be sloped so its base sits between one-quarter and one-third of its length from the wall (s. 3.11(3)) 4.
• A ladder used as access must extend at least three rungs above the landing (s. 3.11(4)) 4.
• No employee may work from the top three rungs of a single or extension ladder, or from the top two steps of a stepladder (s. 3.11(6)) 4.

For fixed ladders, Part II adds the classic climbing rule: maintain three-point contact, and carry tools in a pouch or holster (s. 2.9(3)) 5. Everyone else falls under provincial or territorial law — see the table below.

What are the ladder safety regulations in each province and territory?

Ladder safety regulations exist in every province and territory, although the applicable design standards and the inspection, set-up, use and training requirements vary. The table below sets out what each one requires.

Does the law require workers to be trained on ladders, and who is responsible?

Yes — employers are required to provide the information, instruction and training a worker needs to use a ladder safely before the worker uses one. Federally, the duty is explicit: no employee may use a portable ladder unless they have been "trained and instructed in its safe and proper use" (COHSR s. 3.5) 2. Provincial and territorial OHS laws carry the same duty through their general obligation to provide the information, instruction, training and supervision a worker needs to work safely 10. Some name ladders directly. Saskatchewan, the Northwest Territories and Nunavut require the employer to ensure every worker who handles or uses a portable ladder is instructed in the ladder rules themselves 26,16,18. In Ontario, for example, the general duty sits in the province's OHS statute 10, and the ladder rules themselves are in Reg. 851 for industrial establishments and O. Reg. 213/91 for construction projects 19,20.

What that instruction has to look like varies by jurisdiction, and provincial statutes do not all frame it as a standalone ladder safety course. What does not vary is who owns the duty: the employer. Supervisors carry it day to day, and workers must use ladders as trained, inspect before use, and report defects (Yukon lists those worker duties explicitly) 27.

Which workers must be trained to use a ladder?

Ladder safety training belongs in any industry where work happens above the ground: construction, manufacturing, warehousing, agriculture, and maintenance and repair. Typical examples:

• Roofers, who set up and climb a ladder to reach the roof edge on every job.
• Painters, who work from step ladders and extension ladders at ceiling and wall height, often for long stretches.
• Electricians, who reach panels, fixtures and wiring, and face the electrical hazards above as well as the fall hazard.
• Farmers, who climb to haylofts, bins and silos, frequently alone and on uneven ground.

Anyone who uses a ladder as part of their work — even occasionally — is covered by the duty above.

Can the training be done online?

Yes — the knowledge part of ladder safety training can be completed online. The online course takes about 2 hours 30 minutes. What the online course gives you is the knowledge layer the law demands — the rules, the numbers, the inspection habits.

An online course covers that knowledge requirement, and it is not the whole of what the law asks. Your employer still has to give you workplace-specific instruction on the actual ladders and tasks in your workplace. If you are the employer, that workplace-specific instruction is your part of the duty. Some jurisdictions require more again. In Ontario, for example, where a worker needs Working at Heights training, that program is set by a government standard that includes a practical module with demonstrated learning outcomes 22. Check what applies to your work and your province before treating any single course as the whole obligation.

What should workers be taught about ladders?

Ladder safety training gives workers the knowledge to use ladders safely. Based on the provisions above and CCOHS guidance, it covers 9:

• Ladder types and grades — choosing the right ladder (and duty rating) for the task
• Hazard identification: electrical contact, unstable surfaces, overhead work, weather
• Pre-use inspection, and taking damaged ladders out of service
• Set-up: the 4-to-1 rule, securing top and bottom, the 1-metre extension rule, landing clearances
• Length limits where the rules set them, such as the 9 m limit on a single portable ladder; in Saskatchewan, the Northwest Territories and Nunavut, every worker who uses a portable ladder must be instructed in the portable-ladder requirements 26,16,18
• Safe climbing and working: three-point contact, facing the ladder, staying centred, staying off the top rungs
• Care, maintenance and storage per the manufacturer's instructions
• The rules themselves: your jurisdiction's ladder provisions and the employer's and worker's duties

Does the law set an expiry date for the training?

There is no single Canada-wide expiry period set in law for a standalone ladder safety course; in practice, certificates follow the three-year refresher rhythm common in Canadian safety training, and the validity a provider sets is its own policy. CSA Z11 is a standard for the ladders themselves — design, testing, grades and markings — not a training standard with a renewal cycle. Other mandatory training that applies to your work has its own validity rules. Ontario's Working at Heights training, mentioned above, is legally valid for three years where it is required 21.

What the law does demand in every jurisdiction is that training stays real. Employers must keep workers instructed for the equipment they actually use. A new ladder type, a workplace change, an incident or near-miss, or rusty habits at an inspection all mean refreshing the training sooner than any printed date.

Key takeaways

Ladder safety is regulated everywhere in Canada, from the federal COHSR to the regulations of all ten provinces and three territories. The standards, set-up rules and training requirements differ from one to the next. Day to day, compliance looks like the numbers — the 4-to-1 set-up, three-point contact, the extension above the landing — and the grade printed on the ladder's label. Training is what puts those rules in a worker's hands. Federal law requires it before a worker uses a portable ladder, and every jurisdiction requires workers to be instructed for the equipment they use. Providing it is the employer's legal job.