Intense policy and academic interest in the 'economics of ageing' has come about as a result of the demographic trends that have been experienced over the last 50 years and that are projected for the next 50 years. Key economic policy issues relate to the design of public pensions, welfare systems, healthcare and invalidity benefits, and the regulation of private pensions and other retirement saving. This paper presents an overview of the beginnings of a research agenda targeted towards increasing the empirical evidence on these issues in England and providing extensive data for subsequent research. The paper focuses on summarising some recent data on how individuals' economic circumstances, and in particular the ability and willingness to work, change from age 50 onwards. This will be a key factor in determining the ability of economic institutions to adjust to new socio-demographic equilibria in which individuals are living for longer. Further issues for more extensive empirical research are also identified.