EN
This article presents the results of correlation studies on the Perfectionist Working Style Scale (PWSS) of the Working Excessively Questionnaire (WEQ), developed by Hornowska and Paluchowski (2007). The items of PWSS do not relate to consequences of excessive workload or work addiction, as much as to potential causes of these phenomena. The items pertain to a person’s way / style of preparing and conducting work activities, which is characterized by a person’s excessive strive for excellence. The aim of the study was to investigate the psychological correlates of the perfectionist working style. We formulated hypotheses that apply to the relationship between PWSS and constructs such as self-esteem, locus of control, temperamental traits, hope for success and need for achievement.