This study examined the effect of an expressive-writing paradigm intervention designed to increase emotional self-efficacy in employees. Participants in the intervention condition with lower pre-test self-efficacy scores showed significant increases in self-efficacy. Further, participants in the writing intervention condition showed increased emotional intelligence and positive affect, and decreased workplace incivility perpetration compared to participants in the control writing condition. Overall, the results indicate that an expressive-writing intervention may be an effective strategy for increasing positive workplace outcomes.