Student employment is a common co-curricular activity among undergraduate students. Previous studies have primarily focused on the impact of employment on academic outcomes and post-graduation labor market success. Although there is an assumption that on-campus student employment influences leadership learning, there is a lack of research directly exploring this topic. Therefore, this study explores how on-campus student employment influences leadership capacity development in undergraduate students who worked in a department in Student Affairs. Findings suggest that on-campus student employment influenced leadership capacity development in undergraduate students.