Health & Safety Resources Site
Engineering Physics and CEDT

Critical Injuries

In the event of a critical injury...
  • provide immediate emergency assistance
Then the supervisor must...
  • notify EOHSS for assistance in reporting the incident
  • ensure that the scene remains undisturbed until after investigation
Then EOHSS will...
  • ensure notification of an inspector, the JHSC, and the employee's union
  • issue a written report to the Ministry of Labour within 48 hours
McMaster departments should contact EOHSS (x24352) for assistance and clarification.

The Occupational Health and Safety Act (OHSA) defines a critical injury as,

"...an injury of a serious nature that,

  1. places life in jeopardy,
  2. produces unconciousness,
  3. results in substantial blood loss,
  4. involves the fracture of a leg, arm, hand, or foot but not a finger or toe,
  5. involves the amputation of a leg, arm, hand or foot but not a finger or toe,
  6. consists of burns to a major portion of the body, or
  7. causes the loss of sight in an eye."

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.