This research examines the effects of job insecurity on three outcomes: job attitudes (satisfaction), work behaviors (organizational citizenship behavior and deviant behavior), and negative emotions (anxiety, anger, and burnout). A total of 320 U. S. managers responded to a self-report electronic survey. Additionally, two independent referees have analyzed and rated a subset of the sample of managers' (N = 97) comments over an electronic discussion group about their job satisfaction, organizational citizenship behavior, and deviant behavior. Analyses of both sets of data show that job insecurity is negatively related to satisfaction and that job insecurity has both direct and indirect effects on work behaviors and emotions. We address these results in the context of growing pressures on business to improve efficiencies through human capital reductions bearing in mind the trade-offs that businesses must anticipate as employees respond to job insecurity in ways that are counterproductive to organizational purpose.