Purpose. The creation ofan ergonomic methodical approach to the modernization of management processes of metallurgical production, which involves a human factor while developing and exploiting the difficult man-machine system and estimating the degree of implementation of ergonomic requirements at different stages of an operator’s activity planning. -/- Methodology. Ananalytical model of the organization of the research works devoted to the ergonomic modernization of man-machine systems was developed. Searching and purpose-oriented investigations at different stages of man-machine system development and exploitation were (...) modelled from the sketchy projection till the exploitation of the system. Theoretical, system analytical and experimental methods were used. -/- Findings.The results of ergonomic modernization of management processes of metallurgical production in two countries under new economic (market) conditions were discussed. The factors, which define the tension in rolling-mill operators’ activity, were exposed. Certain recommendations on modernization of the existing technology and labor organization were formulated. -/- Originality. The scientific novelty consists in the development and adaptation of the methodical approach that describes adequately the cognitive complexity and psychophysiological tension in an operator’s activity as the modernization factors of modern metallurgical production in two countries. -/- Practical value.The practical value involves the creation of an ergonomic management system of the development, exploitation and modernization of difficult men-machine systems and metallurgical production management processes. (shrink)