Workflow experience, proactive personality, perfectionism and generalized anxiety disorder, which play an important role in the productivity, performance and happiness of employees, are the focus of this study. The aim of the study is to examine the relationships between these variables, as well as to determine the mediating role of proactive personality and generalized anxiety disorder in the effect of perfectionism on work flow experience. Data were collected from public (58.4%) and private sector (41.6%) employees in order to find an answer to the research question created in line with the purpose of the study and to test the hypotheses. Data collection tools include the Work Related Flow Inventory (WOLF), Proactive Personality Scale, Perfectionism Scale, Generalized Anxiety Disorder Scale, as well as a personal information form. Pearson Correlation analysis and SPSS Process Macro regression analyzes were conducted to examine the relationships between the variables. Research findings show that there are significant relationships between employees' proactive personality traits, generalized anxiety disorder, and workflow experiences. The perfectionism level of employees is significantly related to proactive personality and work flow experience. In addition, it has been revealed that proactive personality trait and generalized anxiety disorder symptoms have serial multiple mediation effects on the relationship between employees' perfectionism levels and workflow experiences. It is thought that the present study will contribute to both the relevant literature and practitioners in terms of determining the antecedents of the workflow experience by examining the variables of perfectionism, proactive personality traits, generalized anxiety disorder and workflow experience together.

Keywords: Workflow experience, proactive personality, perfectionism, anxiety, employee