Based on the positive psychology approach, the present study claims that Leader-Member Exchange Theory and Person-Job Fit Theory could be significant antecedents of flow experience in the workplace, as individuals living in the 21st century spend most of their lives at work. Flow experience is a source of high motivation for employees in terms of both cognitive and emotional functions. Therefore, the concept can cause many psychological states of well-being, such as having fun, feeling happy, or optimism. For this reason, it is quite important for the organizational behavior discipline to define the concept in detail and to focus on possible antecedents. In accordance with this purpose, a cross-sectional research study has been performed in Turkey with the participation of 711 white-collar employees from various companies in the service sector in Istanbul, Turkey. The findings of the research show that high quality manager–employee relationships had significant positive impacts on employees’ flow experience (β = 0,801; t = 35,664; p = ,000). In addition, a good match between person and job had significant positive impacts on employees’ flow experience (β = 0,559; t = 17,968; p = ,000). Thus, the proposed hypothesis 1 and hypothesis 2 of the study were supported. The results indicated that leader-member exchange and person-job fit are antecedents of flow experience in the workplace (p < 0,05). In the present study, all study variables are reviewed and the possible relationships among the study variables are discussed in the literature review part. Finally, the implications of the study for both the individual and the organization are presented in the conclusion and discussion section.