Types of job demands make a difference. Testing the job demand-control-support model among Polish police officers
基于工作需求-控制-支持模型，研究波兰警察的工作需求（操作性与组织性）对抑郁的影响，发现社会支持和部分工作控制能缓冲负面效应，且三向交互作用仅对组织性需求显著。
Drawing on the Job Demand-Control-Support (JDCS) model framework, the present study tested the strain and the iso-strain hypotheses. Specifically, the direct effect of job demands on depression, as well as the moderating role of job control, social support and their joint effect (job control x social support) on the job demand-depression link, was investigated. The data were collected from a representative sample of police officers. Job demands related to operational and organizational police stress were taken into account. Regression analysis using Hayes’ PROCESS macros was applied. The results support the strain hypothesis, and in part the iso-strain hypothesis of the JDCS model. Both operational and organizational demands were directly associated with depression. The strain hypothesis was confirmed in part. Social support and, to a partial extent, job control buffered the negative effects of job demands on depression. Three-way interactional effect was supported but only with respect to organizational (and not operational) demands. High social support intensifies the buffering effect of job control on the organizational demands-depression link. The results partially support the notion of the JDCS model and provide further insight into processes leading to ill health among police officers in the workplace.