This article examines how access to peer salary information impacts job satisfaction. The researchers studied a large sample of Danish workers and found that learning a peer earned a higher salary negatively impacted one's job satisfaction, while learning of a peer's lower salary had no effect. Specifically, learning a colleague in a similar position earned 10% more led to a 2% decrease in reported job satisfaction. This suggests that salaries should be kept private to maximize overall job satisfaction within an organization.