This study used data from the Wabash National Study of Liberal Arts Education to consider whether college student employment was associated with changes in two measures of students' diversity attitudes: openness to diversity and challenge and universal-diverse orientation. Additionally, this study considered whether interactions with diverse peers mediated this relationship. On-campus employment was positively associated with gains in openness to diversity and challenge and universal-diverse orientation, whereas off-campus employment was not associated with gains in either measure. Additionally, the relationship between on-campus employment and attitudes toward diversity appeared to be mediated by meaningful interactions with diverse peers.