The aim of this study is to examine job insecurity from a multilevel perspective and to investigate the roles of two types of job insecurity - job insecurity climate and individual job insecurity - for work-related attitudes and health outcomes. It further explores the role of the workgroup - as a social context - in shaping job insecurity perceptions. Data were collected from white-collar employees in a Swedish organization, with 126 participants nested in 18 groups. The results show that 19% of the variance in job insecurity climate perceptions, and none of the variance in individual job insecurity perceptions, could be attributed to group membership. Further, compared to other members of their group, those perceiving a stronger job insecurity climate reported lower levels of negative self-rated health and higher burnout scores. These results imply that the workgroup is an important social context for job insecurity climate perceptions.