Occupational Health: Occupational health is eventually a branch of preventive medicine which examines the relationship between work and health and effects of work on the health of the worker. Occupational health includes all factors relating work and working conditions, methods and environment that may cause diseases, injuries and deviation from health including maladjustment to work. It implies not only health protection but also health promotion for improving the health and working capacity of the worker, viz. preventive measures against diseases, improvement of nutrition and general mental health. Occupational health was defined by ILO/WHO committee in 1950 as,"Occupational health should aim at:the promotion and maintenance of the highest degree of physical, mental and social well-being of workers in all occupations, the prevention among workers from departure from health caused by their working conditions, the protection of workers in their employment from ri...