Job passion has recently gained increasing attention, as it is crucial to employee well-being and performance. To simultaneously highlight the current trends with regard to environmental issues and organizational psychology, this article investigates the potential antecedents (i.e. environmental stewardship orientation (ESO) and job autonomy) and consequences (i.e. job satisfaction, life satisfaction, and intention to leave) of harmonious job passion among employees working in green restaurants in Taiwan. Data collected from 299 valid samples were analyzed using structural equation modeling. The results indicate that employees’ ESO and perceived job autonomy positively affect their harmonious job passion. Besides, employees with harmonious job passion may have positive job- and life-related outcomes, including high job and life satisfaction, and low intention to leave. The theoretical and practical implications of the findings are discussed, and directions for future research are identified.