Organizational-based self-esteem (OBSE) reflects the perception individuals have of themselves as important, meaningful, effectual, and worthwhile within their organization. Employees with high OBSE participate in activities valued by their organization and in other organization-related behaviors that will benefit the organization to display organizational citizenship behavior (OCB). The purpose of this study is to examine the effect of OBSE on the extent of voluntarism and the perceived motives behind why individuals volunteer. Using survey research, this study tested eight hypotheses and found six relating OBSE to the amount of time volunteered and the reasons for volunteering. The implications for organizations and employees are discussed.