Critical Injuries

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Critical Injuries are defined in the Ontario Occupational Health and Safety Act (OHSA).

McMaster departments should contact EOHSS (x24352) for assistance and clarification.

In the Event of a Critical Injury

The OHSA defines how all organizations must react in the event of a critical injury. At McMaster, the EOHSS department is delegated the responsibility of ensuring that all legally binding reporting requirements are fulfilled.

In the event of a critical injury at McMaster, workers must:

  • render immediate emergency assistance
  • notify the workplace supervisor
  • ensure the scene remains undisturbed until investigated by a Ministry inspector

The supervisor then:

  • immediately notifies EOHSS
  • ensures the scene remains undisturbed until investigated by a Ministry inspector
  • completes an incident report

EOHSS then:

  • immediately notifies the Ontario Ministry of Labour (MOL)
  • immediately notifies the Joint Health and Safety Committee (JHSC) and employee’s union
  • issues a written report to the MOL within 48 hours

The scene of the critical injury is then subject to an investigation.

Critical Injury Investigation

The scene of a critical injury must be inspected by an MOL inspector, as well as by a worker representative from the JHSC.

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