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Falls of more than 3 m

In almost all workplaces, workers are exposed to falls from a height. These accidents are still too frequent, especially since they are easy to avoid. In construction, there is a risk of falling when a worker erects structures, renovates or finishes exterior walls or installs a roof. In establishments or any other workplace, window washing, chimney sweeping, manual handling activities and maintenance are also hazardous tasks. 

A fall of more than 3 metres can also occur from a fragile surface that is unable to support a worker’s weight, such as a skylight, awning, sunshade or a drywall ceiling.

Falls of more than 3 m are a hazard that can result in sprains, strains, multiple fractures and even death. The employer, by implementing safety measures, and the worker, by applying them, have a shared responsibility to ensure safety when working at a height.

Safety rules for all workplaces

 Zero tolerance

If this rule is not followed, the CNESST will stop the work and those at fault will be liable to criminal prosecution.

Zero tolerance sheet: Fall of more than 3 m (in French only)

When workers are exposed to a fall of more than 3 m, the employer must install guardrails (in French only) to prevent falls. If this is not possible, they must ensure that workers use fall protection, according to the order of the hierarchy of controls.
 

Other mandatory safety measures

Depending on the tasks to be performed, one or more of the following measures must be taken by the employer to ensure the safety of the worker:

Protective measures

  • Elevating platform
  • Guardrails
  • Safety net
  • Horizontal safety rail
  • Harness and fall arrest connecting device

Laws and regulations