This study explores how spiritual leadership through its effects on individuals’ spiritual well-being enhances employee engagement and augments employees’ organizational commitment. The research conducted a general survey of 207 millennial employees in China, which was tested using partial least squares (PLS) structural equation modeling. The results suggest that employee engagement was significantly influenced by spiritual leadership. In addition, the results demonstrate that organizational commitment was influenced by the sequential intervening effects of employee well-being and work engagement. Both the explained variance (R2) and the effect size of exogenous variables on endogenous variables (ƒ2) showed moderate-to-high effects, supporting the predictive ability of this PLS spiritual leadership model. This study suggests that young workers’ engagement and commitment to their work and organizations are roused when the organization and its leaders satisfy workers’ higher-order humanistic needs. This is accomplished when employees’ socio-psychological resources, such as spiritual well-being, are enhanced through spiritual leadership, which can be augmented by organizational climates that embrace young workers’ “whole” selves. This study expands our understanding of the role that spiritual leadership plays in not only motivating organizational commitment but, more importantly, in engaging employees in their work roles.