As more nonprofit organizations rely on older adult volunteers to provide services, it is important to retain volunteers for an extended period of time to ensure service quality and the beneficial outcomes of volunteering. Nonprofit organizations are positioned to facilitate older adult volunteers' role performance. Based on an institutional perspective on volunteering, this study explored what institutional facilitations are needed for sustained volunteering. The sample included 401 older adult volunteers from 13 programs across the nation. Data were collected by means of self-administrated questionnaires. Institutional facilitation was captured by volunteer role flexibility, incentive, role recognition, and training. With volunteers' age controlled for, two-level hierarchical linear models were used to assess the relationship between volunteer duration (level 1 variables) and institutional facilitation (level 2 variables) in the volunteer program. Results demonstrated that a higher level of volunteering duration was associated with institutional facilitation factors of more role recognition and more training hours. Duration was also associated with less incentive. These findings suggest that certain facilitators from organizations contribute to an extended period of commitment among older adult volunteers.