Despite of the consistent attention to the relationship among job demands, job resources, and job engagement, the research targeting casual workers and their distinctions depending on gender was scarce in the coffee industry. The purpose of this research was to investigate the relationships among casual workers' job demands, job resources, and job engagement and the moderating role of gender in the coffee industry. The results through structural equation modeling indicated that one of the factors of the job demands (i.e., work overload), and factors of job resources, except for job autonomy (i.e., social support, feedback, and opportunities for self-development), had a significant effect on job engagement. Furthermore, the invariance test showed that gender played a significant moderating role between all factors of job demands and job engagement. However, there was no moderating effect of gender between job resources and job engagement. Implications for academia and management are also discussed.