A worker with colon cancer filed a workers’ comp claim. After he died, his widow pursued the claim. The Workplace Safety and Insurance Board rejected the claim. For the claim to be accepted, there needed to be a “clear and adequate history of occupational exposure to asbestos dust” of a continuous and repetitive nature. Here, the worker may have occasionally been exposed to asbestos when he worked at a car dealership and there was the “possibility” he was exposed to asbestos as a truck driver. But this evidence was insufficient to establish a tie between his cancer and exposure to asbestos [Appeals Resolution Officer Decision No. 20100021,  CanLII 15741 (ON W.S.I.B.), March 23, 2010].