“…Medical costs (Penner & Penner, 1990) due to lung cancer, heart disease, respiratory problems (Ockene, Kuller, Svendsen, & Meilahn, 1990) Absenteeism (Bush & Wooden, 1995) Musculoskeletal problems Low back pain because of exposure to whole-body vibration in Italian bus operators (Bovenzi, 1996) Increased back and neck pain among urban bus operators in California (Anderson, 1992) Increased risk of musculoskeletal disorders associated with long-term vibration exposure among bus operators in Sweden and the United States (Magnusson, Pope, Wilder, & Areskoug, 1996) A high level of musculoskeletal disorders in operators, appearing to increase with years of driving (Krause et al, 1997b) Workers' compensation (California Department of Industrial Relations, 1990) Sick leave (Grunfeld & Noreik, 1992) Disability (Frymoyer & Cats-Baril, 1991) Costs for recruitment and training because of higher rate of separation from employment…”