: Bladder cancer occurs when there are abnormal, cancerous cells growing in the bladder. Certain occupations and work environments that expose workers to dyes and some organic chemicals appear to increase the risk for bladder cancer. Workers in the rubber, chemical, leather, textile, metal, and printing industries are exposed to substances such as aniline dye and aromatic amines that may increase their risk for bladder cancer. Other at-risk occupations include hairdressers, machinists, painters, and truck drivers. Skin cancer is caused by UV rays and other radiations. Lung cancer is caused by asbestos. Liver cancer is by hepatitis B infections and aflatoxins.