Outlines trends in the ageing of the population in OECD countries from 1995-2050 and considers the labour market consequences. Investigates the labour force participation rate of older workers and examines reasons for their non-employment. Looks at trends in the lowering of the retirement age between 1950 and 1995 and discusses the impact of the old age pension on early retirement. Explores policy options to overcome projected deficits in pension accounts and examines public and enterprise policies concerning active ageing and the employability of older workers.