Men and women in Great Britain are increasingly involved in a variety of economic and social roles, particularly during their mid-life period. This article examines the changes in role occupancy across four birth cohorts passing through mid-life over the period 1985-2000. Data from the General Household Survey is used to investigate the occupancy of four key roles: 'partner', 'parent', 'carer' and 'paid worker', analysing separate and multiple role occupancies and level of commitment to a particular role. The implications of the findings for health and employment policies is also discussed.