Two studies that examined the role of revenge in rumor transmission and involved working adults as participants are reported. Study 1 used hypothetical scenarios to manipulate organizational treatment of an employee and the believability of a rumor. Participants had higher intention to transmit a harmful rumor when the organization broke job-related promises (i.e., breached the psychological contract) and revenge motivation mediated this relationship. Believability of the rumor had no effect. Study 2 used a field survey methodology and, controlling for social desirability, replicated the results for self- and peer-reported rumor transmission behavior. Study 2 also showed that participants belief in negative reciprocity norm strengthened the relationship between breach and revenge motivation.