The goal of the work is to study the impact that employees experience from their drinking colleagues in the work environment.

In four regions of Ukraine (Kharkiv, Luhansk and Zaporizhzhia regions, as well as the city of Kyiv), 1742 people were examined during 2018—2021, who belonged to four comparison groups: patients with alcohol dependence (AD) (393 people); healthy relatives of AD patients (274 people); representatives of the general population comparable with the representatives of the first two age groups (334 people) and students of 3—4 courses of medical universities (741 people).

The main research instruments were the questionnaire of the international research consortium GENAHTO (Gender, Alcohol, and Harms to Others). The obtained data were processed by methods of mathematical statistics (variance, correlation and regression analysis) on a computer using Excel 2016 computational tables (with the Data Analysis package).

It was found that 39.44 % (!) of men and 17.35 % of women who had paid work or participated in volunteer activities, during the last 12 months, suffered from problems in relationships with colleagues, due to the fact that the latter abused alcohol. The subjectively assessed by the respondents the strength of the negative impact that drinking colleagues had on them during the last 12 months was 5.20 ± 0.16 points for men and 4.83 ± 0.35 points for women (on a ten-point scale). According to the respondents themselves, such a strength of negative impact significantly reduced their work productivity. Thus, the significant strength of the negative impact that drinking colleagues have on other employees is an important component of the complex problem of "harm to others", which requires the improvement of the current national policy on alcohol taking this circumstance into account.