This cross-level field study, involving 187 employees from 35 groups in 20 organizations, examined how individuals' antisocial behaviors at work are shaped by the antisocial behavior of their coworkers. We found a positive relationship between the level of antisocial behavior exhibited by an individual and that exhibited by his or her coworkers. We also found that a number of factors moderated this relationship. Finally, we found that dissatisfaction with coworkers was higher when individuals engaged in less antisocial behavior than their coworkers.