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Heat Stress



To advise faculty, staff and students of precautions to follow when their work area reaches about 30°C or 86°F.


Reduce Exposure


Reduce the Heat


Rest Breaks

The Occupational Health Clinics for Ontario Workers recommends using a humidex based format for determining when work should stop or when to increase the number or duration of work breaks.  Humidex Based Heat Response Plan




For further information refer to Ontario Ministry of Labour Guideline for Heat Stress or Workplace Safety & Insurance Board (WSIB).