Abstract
Thailand is becoming an aging society and needs to encourage the elderly to show their potential to help society and to be proud of their life through voluntary activities. This study explored the characteristics of senior volunteers living in Saensuk Municipality, Chonburi, Thailand. We also created a sustainable model of senior volunteer mainstay development. Our sample comprised 16 elderly people, aged over 60, who have had experience in voluntary work for at least three months. We used a phenomenological research methodology by conducting in-depth interviews and focus group discussions. Then, we analyzed the raw data with a content analysis. The results revealed that most of the senior volunteers were persuaded to volunteer by their peers and also a family model. Their missions included acting as an information provider, demonstrator, coordinator and donator. Their important qualities were integrity, flexibility, energy, reliability and responsibility. As volunteers, they felt happy, valued, and healthy, with increasing friendships and self-empowerment. A sustainable model of senior volunteer leader development was proposed, consisting of a qualified senior volunteer, the support of a local organization and effective communication.