Carcinogen Classification Workshop

On February 14th, 2012, OCRC hosted a workshop on the classification of carcinogens at the United Steelworkers Hall. This workshop aimed to educate and inform attendees on the carcinogen classification process used by the International Agency for Research on Cancer (IARC), highlighting how epidemiological, toxicological and animal studies are used in this process. The classification of shiftwork was used to exemplify the classification procedures employed by IARC. Additionally, the subsequent policy implications of an IARC classification were discussed.

Note: IARC updated the way it classifies carcingoens in 2019, and published an updated review of night shiftwork in 2020. Some of the materials from this workshop may be out of date.

Workshop Materials

Biographies of workshop leaders
IARC backgrounder
Preamble to the IARC Monographs
Lancet summary on the carcinogenicity of shiftwork, painting, and firefighting
IARC evidence summary for shiftwork


Exposure Data and Human Studies
Dr. Paul Demers, Occupational Cancer Research Centre

Experimental Animal and Mechanistic Studies
Dr. David Blask, Tulane University School of Medicine