This article updates our understanding of the field of job insecurity (JI) by incorporating studies across the globe since 2003, analyzes what we know, and offers ideas on how to move forward. We begin by reviewing the conceptualization and operationalization of job insecurity. We then review empirical studies of the antecedents, consequences, and moderators of JI effects, as well as the various theoretical perspectives used to explain the relationship of JI to various outcomes. Our analyses also consider JI research in different regions of the world, highlighting the cross-cultural differences. We conclude by identifying areas in need of future research. We propose that JI is and will continue to be a predominant employment issue, such that research into it will only increase in importance and relevance. In particular, we call for in-depth research that carefully considers the rapid changes in the workplace today and in the future.