The physician in occupational medicine is obliged to meet the challenge of the varying demands of industries in which new processes are being introduced every day and the diagnostic horizons are constantly widening. Therapeutic and prophylactic skills must be correspondingly broadened. Frequent visits to the plant and patient attention to employees complaints result in the gradual accumulation of priceless experience. When the confidence of employees and management has been earned, the physician finds that industry can provide him not only with advantages of economic security but also with the assurance, in many instances, of financial support for a stimulating program of continued medical education and clinical research. Through the study of occupational disease the medical profession can and must contribute to modern industrial society.