Volume 98 of this series includes critical reviews and evaluations of evidence on the carcinogenicity of a range of human exposures encountered in the Painting and Firefighting professions such as chemicals, complex mixtures, occupational exposures, physical agents, biological agents, diesel particulates, shift work and lifestyle factors. This report represents the views and expert opinions of an IARC Monographs Working Group on the Evaluation of Carcinogenic Risks to Humans, which met in Lyon, 2–9 October 2007.