This study examined the primary non-economic motivations behind participating entities' organizational citizenship behavior in construction megaprojects, referred to as their megaproject citizenship behavior (MCB), in terms of altruism and observed practice. A questionnaire-based survey designed to test the effect of non-economic drivers on MCB revealed that the pursuit of social value and self-serving motivation, including firm development and political appeal, function as significant non-economic drivers of MCB. And the self-serving motivation to perform MCB is generally less significant than the pursuit of social value, and the relationship between self-serving motivation and MCB is partially moderated by the governmental connections of the megaprojects. In government-hosted construction megaprojects, when the governmental connections of the individual participating entity are as strong as those of the megaproject itself, MCB engagement is actually driven by the pursuit of firm development and political appeal even where the apparent driver is the pursuit of social value.

本研究从利他主义和观察实践的角度，探讨了大型建设项目参与主体组织公民行为（MCB）背后的主要非经济动机。一项以问卷调查为基础的调查旨在测试非经济驱动因素对MCB的影响，结果显示，追求社会价值和自我服务动机，包括企业发展和政治诉求，是MCB重要的非经济驱动因素。而实施MCB的自我服务动机一般低于对社会价值的追求，并且自我服务动机与MCB之间的关系部分受到了大型项目政府关系的调节。在政府主办的大型建设项目中，当个人参与实体的政府联系与大型项目本身的政府联系一样紧密时，即使在追求社会价值这一明显驱动力的情况下，MCB的参与实际上也是由对企业发展和政治诉求的追求驱动的。