Illegitimate tasks as a workplace stressor have been linked with various negative employee well-being and behavioral outcomes. However, whether and how its negative effects might spill over to employees' family domain has been less examined. The current study examined psychological detachment as a mediator in the relationship between illegitimate tasks and three types (time-based, strain-based, and behavior-based) of work-to-family conflict (WFC), and investigated the moderating effect of passive leadership. We collected data from 129 participants across three waves. Results showed that psychological detachment mediated the relationships of illegitimate tasks with time-based and strain-based WFC, but not with behavior-based WFC. Further, the negative effect of illegitimate tasks on psychological detachment as well as the indirect effect of illegitimate tasks on strain-based WFC via psychological detachment were stronger for individuals experiencing more passive leadership, suggesting that having a leader who does not provide functional leadership could exacerbate the effect of illegitimate tasks on psychological detachment and its indirect effect on strain-based WFC via detachment. Our findings contribute to a deeper understanding of the potential negative effect of illegitimate tasks beyond the work domain through psychological detachment, and the exacerbating effect of passive leadership on stressor-strain relationships.

作为工作场所压力源的非法工作与各种负面的员工福祉和行为结果相关联。但是，它的负面影响是否以及如何扩散到员工的家庭领域的研究较少。当前的研究检查了心理超脱作为调解人与家庭冲突（WFC）的三种类型（基于时间，基于劳损和基于行为）之间的关系的中介者，并研究了被动调节的调节作用领导。我们通过三波收集了来自129名参与者的数据。结果表明，心理超脱介导了非法任务与基于时间的WFC和基于压力的WFC的关系，而不是与基于行为的WFC的关系。进一步，对于经历更多被动领导的个人而言，非正当任务对心理超脱的负面影响以及非正当任务通过心理超脱对基于劳损的WFC的间接影响更强，这表明拥有不提供职能领导的领导者可能会加剧这种影响。任务对心理超脱的影响及其通过超脱对基于劳损的WFC的间接影响。我们的发现有助于通过心理超脱来更深入地了解超出工作领域的非法任务的潜在负面影响，以及被动领导对压力与劳累关系的加剧作用。暗示拥有不提供职能领导的领导者可能会加剧非法任务对心理超脱的影响，以及其通过超脱对基于劳损的WFC的间接影响。我们的发现有助于通过心理超脱来更深入地了解超出工作领域的非法任务的潜在负面影响，以及被动领导对压力与劳累关系的加剧作用。暗示拥有不提供职能领导的领导者可能会加剧非法任务对心理超脱的影响，以及其通过超脱对基于劳损的WFC的间接影响。我们的发现有助于通过心理超脱来更深入地了解超出工作领域的非法任务的潜在负面影响，以及被动领导对压力与劳累关系的加剧作用。