Conclusion
Although previous studies have anecdotally claimed that spirituality increases various outcomes such as work unit performance (Duchon and Plowman 2005), organizational commitment (Markow and Klenke 2005), and ethical decisionmaking (Beekun and Westerman 2012; Giacalone and Jurkiewicz 2003a), there is a shortage of empirical evidence documenting the positive effect of employees’ spirituality on their job performance and the psychological process that underlies it. To shed light on the process mechanism, we hypothesized and tested the relationships between employees’ spirituality, their intrinsic motivation, job crafting, and job performance based on the Job Demands-Resources (JD-R) model (Schaufeli and Bakker 2004) and self-determination theory (SDT) (Deci and Ryan 1985). The results of this study extend previous research on employees’ spirituality and job performance by suggesting that job resources and selfdetermination-based motivation are key underlying mechanisms of job performance.