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New Report--Burden of Occupational Cancer in Ontario, Cancer Care Ontario and the Occupational Cancer Research Centre

Cancer Care Ontario and the Occupational Cancer Research Centre are pleased to announce the launch of the Burden of Occupational Cancer in Ontario: Major Workplace Carcinogens and Prevention of Exposure report: This report is the sixth in the Cancer Risk Factors in Ontario series (, which provides in-depth assessments of the multiple causes of cancer in Ontario.
Occupational exposures are often overlooked despite being a substantial and preventable cause of cancer. Our report focuses on the most common carcinogens found in Ontario workplaces, particularly those that make the greatest contribution to the burden of occupational cancer:

  • Solar Radiation: Approximately 450,000 Ontario workers are exposed to solar radiation, causing an estimated 1,400 non-melanoma skin cancer cases per year
  • Asbestos: Fewer than 55,000 workers are exposed to asbestos but it is estimated to cause 630 lung cancers, 140 mesotheliomas, 15 laryngeal cancers and less than five ovarian cancers annually
  • Diesel Engine Exhaust (DEE): About 301,000 workers are exposed every year to DEE and it accounts for 170 lung and 45 bladder cancer cases
  • Crystalline Silica: An estimated 142,000 Ontario workers are exposed to crystalline silica, which annually causes almost 200 lung cancer cases

The report includes evidence-based policy recommendations that will help government, Ontario’s occupational health and safety system, employers and non-governmental organizations reduce the risk of occupational cancers.
For more information about this report, please email