Other Burden Results

The goal of the Burden of Occupational Cancer study is to provide a comprehensive picture of the impact of well-established workplace carcinogens. The carcinogens listed below are also important contributors to occupational cancer burden in Canada.

CarcinogenIARC classification*Number of exposed workers in Canada**Number of cancers per yearKey Sectors
ArsenicDefinite25,00060 lungManufacturing
Construction
Artificial UV RadiationDefinite141,00015 ocular melanomaWelding-related jobs in
manufacturing, trade, and construction
BenzeneDefinite375,00020 leukemia
<5 multiple myeloma (possible)
Manufacturing
Transportation & warehousing
Trade
Chromium (VI)Definite104,00050 lung
<5 sinonasal (possible)
Manufacturing
CreosotesProbable4,80095 non-melanoma skin (possible)Manufacturing
Transportation & warehousing
Construction
FormaldehydeDefinite152,0005 leukemia
<5 nasopharyngeal
Manufacturing
Nickel compoundsDefinite117,000170 lung
<5 sinonasal
Manufacturing
Mining & oil & gas extraction
PaintingDefiniteN/A75 lung
25 bladder
5 mesothelioma
Construction
Manufacturing
Wood dustDefinite340,00010 nasopharyngeal
10 sinonasal
Manufacturing
Construction

*Definite human carcinogen = IARC Group 1, probable human carcinogen = IARC Group 2A
**Estimates from CAREX Canada

There are smaller numbers of attributable cancers due to the following occupational exposures: acid mists (5 laryngeal cancers, 20 suspected lung cancers), cadmium (5 lung cancers), work as a hairdresser or barber (20 suspected bladder cancers), inorganic lead compounds (15 suspected stomach cancers), and untreated mineral oils (10 non-melanoma skin cancers, <5 melanomas).

The following occupational exposures contribute less than five attributable cancers per cancer site: rubber production (bladder, lung, leukemia, lymphoma, suspected larynx), beryllium (lung), leather dust (sinonasal), vinyl chloride monomer (liver), aromatic amines (bladder), polychlorinated biphenyls (melanoma skin), trichloroethylene (kidney, suspected non-Hodgkin lymphoma, suspected liver), X and gamma radiation (lung, thyroid), 1,3-butadiene (Hodgkin lymphoma, leukemia), tetrachloroethylene (suspected bladder), and art glass manufacturing (suspected lung).