In societies where the value of people is measured by what they do to earn their living, the interruption of work activitiesmay cause a deep disorganization of daily life, with an absence of projects, social intentions for life and social roles. This research hadas its objective to analyze the effect of retirement on identity and subjectivity of old people and effects this has in other roles and activitiesplayed by them, besides the contribution of occupational therapy for their social insertion. This is a qualitative research, carriedthrough by means of a case study from March 2007 to January 2008, where the central complaint of patients was the great disruption ofdaily life after retirement. Data collection involved an exploratory stage, planning, data collecting and evidences and analysis of results.Results show a more active position of the patient through the enrollment in significant activities, rescue of social roles, reduction ofpsychosomatic symptoms and the search for medical consultations, improvements in family relationships, and the construction of lifeprojects. One may conclude that the intervention of occupational therapists, before and after retirement, may contribute for an activeaging, through the transforming action of activities carried through in the Occupational Therapy setting.