Morbidity with temporary disability is one of the criteria for assessing the impact of working conditions on the health of employees. Aim. The analysis of morbidity with temporary disability among workers in the steel industry for the period from 2012 to 2014 with the definition of the level and structure at the plant as a whole and in the main shops of metallurgical production separately has been made. Methods and results. The level and structure of morbidity with temporary disability has been determined at the plant in general and at main departments of metallurgical production. It has been established that morbidity at iron and steel plants is higher than average (1388.62±70.9) by number of cases per 100 workers and higher (106.15±4.34) by the number of disability days per 100 workers according to E. L. Notkin scale. The average severity of the event was 13.08±0.21. The morbidity of workers in open-hearth plant, sintering and mechanical workshops is significantly higher than in workers at the control department. Conclusions. The obtained results testify about the influence of harmful working conditions on the state of health in workers and about necessity to develop the comprehensive program of preventing professional risks of incidence development.