Introduction. An essential prerequisite of the development and implementation of preventive measures aimed at improving the health of workers by increasing their productivity is to establish an objective link between the morbidity of workers and working conditions, which is based on understanding the causes of morbidity and the principles of the evidence base. The purpose of the research is to conduct an in-depth analysis of the employment of workers in the mining industry in harmful working conditions. Materials and methods of research. The analysis of employment of workers in harmful working conditions was carried out according to 10 final acts of periodic medical examinations of 9023 employees of the mining industry of Kryvyi Rih (2014Rih ( -2019. During the research, conservation measures were taken to maintain medical secrecy about patients.Results. The number of employees exposed to harmful and dangerous factors of the production environment and labor process varies at the mining industry from 3465.00 (2018) to 4020.00 (2014) with a tendency to decrease. In 2018, the number of people under the age of 21 working in harmful working conditions increased to 4,24 per 100 employees, compared to 3,83 per 100 employees (2015) and 3,06 per 100 employees (2014). The number of working seniors has almost decreased threefold, from 9,21 per 100 employees in 2015 to 2,77 per 100 employees in 2018. The number of people with more than 10 years of work experience in harmful working conditions is consistently high and ranges from 62.66 % (2014) to 53.19 % (2018). The number of women with more than 10 years of work experience is 53.0 % (2018). The leading harmful production factor that occurs in the workplace of employees of the mining industry (according to the final act on the results of medical examinations) is the severity of work -80,20 % (women 65,10 %) from the registered number of regular employees working in harmful conditions. Conclusions. The dynamics of the number of workers employed in harmful and dangerous working conditions is associated with changes in working conditions, technological process, with a decrease in the total number of employees due to the optimization of production and labor migration. Work experience of more than half of the average period of development of occupational diseases in the profession is a risk factor, and the work in harmful conditions for persons over 40 is critical, which requires the development and implementation of measures to assess and manage occupational risk.