The study seeks to find out the reasons why middle and late adults join and maintain their membership in their organization. An interview guide was developed to assist the researchers in facilitating the data gathering. A non-probability sampling was used for researchers aimed at interviewing active members of organizations in Metro Manila particularly in Quezon City. The subjects age ranges from 40-83 years old. There were 14 retirees and 12 non-retirees that comprised the 26 subjects. The subjects were then interviewed. The data was content analyzed. The results showed that there are 6 categories of reasons for joining namely: for self-enrichment, for relaxation, for companionship, for spiritual needs, for civic purposes, and for career opportunities. Most of the respondents, both retirees and female adults, the reason for joining organizations is for companionship. Non-retirees and male adults\u27 primary reason is for self-enrichment. There are also 6 categories of reasons for staying which was also the categories for reasons for joining. For both the retirees and female adults, companionship is the primary reason for staying in their respective organization. As for non-retirees, relaxation topped the reason while for male adults, staying in their respective organization is for the reason of self-enrichment and companionship