In October 2017, the Occupational Cancer Research Centre (OCRC) and Cancer Care Ontario released a report on the impact of workplace carcinogens in Ontario. The report, “Burden of Occupational Cancer in Ontario: Major Workplace Carcinogens and Prevention of Exposure,” focused on carcinogens that are well-established causes of cancer: solar ultraviolet radiation, asbestos, diesel engine exhaust and crystalline silica. Additionally, it examines the most commonly known or suspected carcinogens found in Ontario workplaces and highlights opportunities for prevention at the policy level, as well as in workplaces. This presentation will provide a brief overview of the methods used for the report, an overview of the key findings, and recommendations.