Increasingly, human resource professionals are being challenged to manage organizational programs that have proliferated in the wake of continual pressure to respond to competition and environmental change. This research examines program commitment, that is, an employee's commitment to an organizational program, and investigates its association with important organizational outcomes and a set of potential antecedents in 2 longitudinal field studies. In the first study, program commitment was positively related to participation in the program and program-related performance. In the second study, organizational commitment, change efficacy, and teamwork orientation were supported as antecedents to program commitment.