The creation of safe workplaces is a complex issue. One important element is the development of a work safety culture (WSC). A work safety culture consists of elements such as attitudes, values, norms and employee behaviour. A significant factor influencing WSC is widely understood leadership? Achieving the goals set, both in terms of how well the organization operates as well as its health and safety record, depends to a large extent on leadership behaviour. The aim of the research was to determine the relationship between the assessment of a leader’s behaviour and the creation of a work safety culture. The results of the authors’ own research were preceded by an analysis of the source literature. A quantitative survey was carried out using the CAWI method on a group of 157 respondents in October 2023. Analysis of the results made it possible to conclude that a superior’s behaviour significantly influences the development of a work safety culture. Moreover, the respondents represented enterprises in which the WSC was assessed as acceptable, but it required further development to be considered strong or desirable.