[Stress reaction to work today].

The characteristic of stress factors at work and their effect upon humans is of great significance in labour optimization, detection of early changes in organism, assessment of the operative MAC and MAN, standardization and categorization of labour, etc. On the base of such studies (biochemical, physiological and psychophysiological) stress and fatigue in various occupations and working regimes are characterized. The results from the studies on stress reactions at work are presented in a summarized way, making use of complex methodical approach.