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Chronic obstructive pulmonary disease (COPD) is a progressive disease with incompletely reversible airflow obstruction that occurs under the impact of various factors (among which smoking is the key factor). [1, 2] According to several recent studies, the incidence of COPD in people over 40 years is 10.1% globally (11.8% for men and 8.5% for women). [3] COPD is one of the most pressing health and social issues not only due to the prevalence of the disease. It also poses a high risk of serious complications resulting in disability and death including for the working population. [1, 2]