The role of ageing in the growth of government and social welfare spending in the OECD

Government expenditure as a share of GDP in the OECD rose at an annual growth rate of 1.02% in the period between 1970 and 1997. Government spending has increased most on functions particularly demanded by elderly population: social welfare, health and defence. Ageing is the main driving force of the growth of government spending, followed by relative prices and population. However, we also find that the other age groups react to ageing, thereby preventing increases in benefits per retired persons and that institutional reforms have been successful at reducing the impact of ageing on pensions in recent years.