Abstract
Background: Given the large number of workers in the construction industry, it is important to derive accurate and
valid estimates of cancer risk, and in particular lung cancer risk. In most previous studies, risks among construction
workers were compared with general populations including blue and white collar workers. The main objectives of
this study were to assess whether construction workers experience excess lung cancer risk, and whether exposure
to selected construction industry exposures carries excess risks. We wished to address these objectives within the
sub-population of blue collar workers.