This study aimed to investigate how perceived overqualification is linked to an individual's career commitment among service sector employees in China. Additionally, it sought to examine the mediating role of career self-efficacy and the moderating effect of social support. Methods: This study collected data from 441 employees using a three-wave data collection design with a two-week gap between each round. Moreover, we employed partial least square structural equation modeling (PLS-SEM) to analyze the data.
Results:The findings asserted that perceived overqualification was positively associated with employee career self-efficacy and commitment. Furthermore, career self-efficacy mediated the link between perceived overqualification and career commitment. The study also demonstrated that perceived overqualification and career self-efficacy were influenced by the level of social support received, with a stronger relationship observed when social support was high. These findings highlight the value of fostering social support and career self-efficacy among coworkers to increase overqualified employees' commitment to their careers and provide valuable insights for organizations seeking to manage their talent pool effectively. Discussion: The study suggests that when employees perceive themselves as overqualified for their job, it can lead to a higher sense of career self-efficacy, which is the belief in one's ability to perform job tasks effectively. This increased self-efficacy, in turn, can lead to a greater commitment to their career. Furthermore, fostering social support and building career self-efficacy can help organizations manage their overqualified pool effectively and improve employee satisfaction and productivity.