[Health problems related to occupational activities].

Statistical data obtained from insurance companies give certainly a good picture of work effects on health in the field of accidents. This is different for occupational diseases, which are more difficult to diagnose and which are recognized on the basis of medicolegal criteria. Statistics do not involve other aspects than diseases, such as discomfort, ergonomical questions, psychophysiological consequences and situations where there is a limited role of occupation. Prevention of work related health problems has to consider these characteristics and needs to be based on risk analysis, a prospective procedure. The advantage of such an approach is the possibility of adjustment to a changing work environment and to new technologies.