The present study aimed to investigate the mediating effect of social support in the relationship between decision authority and positive mental health as well as the moderating effects of socio-demographic characteristics closely related to this relationship among working populations. Data analyzed was from the Canadian Community Health Survey-Mental Health 2012. A total of 15,867 individuals with complete information on past 12-month work experience prior to the data collection were included in this study. Mediation analysis suggested that social support could partially mediate the association between decision authority and positive mental health. Multiple group analysis indicated that the higher mediation effect of social support was more likely to be reported by males, people from middle- and high-income groups, and those doing service and white-collar jobs. Findings on roles of social support and socio-demographic characteristics in the relationship between decision authority and positive mental health could lay the groundwork to articulate and develop effective strategies to promote positive mental health in the workforce.

本研究旨在调查决策支持与积极的心理健康之间的关系中社会支持的中介作用，以及与工作人口之间的这种关系密切相关的社会人口统计学特征的调节作用。分析的数据来自加拿大社区健康调查-精神健康2012。共有15867名患者在收集数据之前拥有过去12个月工作经验的完整信息，该研究包括在内。调解分析表明，社会支持可以部分调解决策权威与积极的心理健康之间的联系。多组分析表明，男性，中等收入和高收入群体的人更有可能报告社会支持的更高调解效果，以及从事服务和白领工作的人。在决策权与积极的心理健康之间的关系中，社会支持和社会人口特征的作用的发现，可以为阐明和制定有效的策略以促进劳动力积极的心理健康打下基础。