National Day of Service (NDS) volunteering events have become common, yet little is known about how the design of such events affects volunteer satisfaction. This relationship is important because volunteer satisfaction ensures a strong volunteer base for special events and promotes sustained volunteerism. We explore how the design of NDS projects promotes volunteer job satisfaction. Our approach to the research question is informed by work design theory. Based on interview, participant observation, and focus-group data from an NDS in the Netherlands, the findings suggest that nonprofit organizations can elicit volunteer job satisfaction by designing NDS projects that create a sense of added value, support productivity, and make volunteers feel comfortable. Designing NDS projects that incorporate task significance, symbolic social support, feedback from others, beneficiary contact, task identity, project preparation, physically demanding work, social support, and limited autonomy help to achieve these goals.

国庆日（NDS）志愿活动已经很普遍，但对于此类活动的设计如何影响志愿者满意度的了解却很少。这种关系很重要，因为志愿者的满意度确保了特殊活动的强大志愿者基础并促进了持续的志愿服务。我们探索NDS项目的设计如何提高志愿者的工作满意度。我们通过工作设计理论来解决研究问题。根据荷兰NDS的访谈，参与者观察和焦点小组数据，研究结果表明，非营利组织可以通过设计NDS项目来激发志愿者的工作满意度，这些项目可以创造增值感，支持生产力并使志愿者感到舒适。设计包含任务重要性，象征性社会支持，