Across the industrialised nations, the labour market participation of older workers (i.e. those aged 50 and over) continues to attract considerable attention, as the numbers in employment decline and those who are inactive or retired increase (for a 21-country review see OECD, 2006). Against a background of concern over the economic and social implications of low employment rates among the over-50s, much public policy has come to focus on extending the average working life by encouraging people to work for longer and to delay retirement (see, for example, House of Lords, 2003; and on European policy, von Nordeim, 2004).