We examined the volunteer service contribution of older adults (N = 100) to volunteer role development and agency attachment. Informed by a developmental regulation framework and socio-emotional selectivity theory, we tested a twofold hypothesis for the premise that greater role development and agency attachment would be experienced by (1) older adults who had multiple goals for volunteering, and (2) older adults who pursued these goals by making greater use of their social resources relative to their physical and cognitive resources. Both hypotheses were supported. Older adults who have numerous motives for volunteering, and who maximize the use of their social skills and prosocial attitudes, are more strongly attached to their host agency and experience higher levels of volunteer role development. Implications for the field of volunteerism are discussed.