Using the revised job demands–resources (JD-R) model as a theoretical framework, our article aims to develop a conceptual model of the work engagement of paid workers in nonprofit organizations (NPOs) by identifying its antecedents and outcomes discussed in the literature. We found that job resources are prevalent antecedents for work engagement, while three categories of the JD-R model are all significant with work engagement. Although some findings are similar with existing studies for for-profit organizations, others implied that we need a different approach to work engagement of NPO workers. We finally offer a proposed JD-R model of work engagement in NPOs that has a new category, ideological resources. At the end of this article, we discuss the findings and academic/practical implications, along with recommendations for future research.