This study aims to examine how employees engage in different types of negative information sharing behaviors about their organization, namely, negative megaphoning, in response to perceived organizational injustice. The role of employees’ negative affect and employee–organization relationship are also examined. Results of an online survey with 403 full-time employees in the U.S. across industry sectors showed that perceptions of organizational injustice increase employee’s negative affect, thereby increasing their internal, external, and anonymous website negative megaphoning behaviors. Injustice perception also decreased EOR (...) quality, which in turn, increases employees’ negative megaphoning behaviors on anonymous websites. Theoretical and practical implications are suggested. (shrink)