Existential, psychosocial, and organismic theories propose that human beings tend towards greater autonomy over the lifespan, and that greater autonomy is associated with greater happiness. We tested these two ideas in the under-studied domain of social duties by examining the associations between chronological age, felt autonomy while engaging in various social duties, and subjective well-being (SWB). Study I found that older Americans felt more autonomous while voting, tipping, and paying taxes, Study 2 showed that American parents felt more autonomous in their work and citizenship roles compared with their own children, and Study 3 found that older Singaporeans felt more autonomous while obeying authorities, helping distant relatives, and staying politically informed. In all three studies, felt autonomy was also associated with higher SWB. It appears that older persons better internalize their social duties, to their own and societies' benefit. Copyright (c) 2004 John Wiley & Sons, Ltd.