The purpose of the paper is to describe and contrast public policies regarding the participation of older people in volunteer work in three countries: the United States, Australia and the Netherlands. Data were collected in 1997–1998 through analysis of policy documents and through 50 interviews with researchers, policy makers and volunteer co-ordinators. The study found considerable differences between the three countries in the provision of government policies and programmes for senior volunteering. It was concluded that such differences could be explained in the context of the definition of seniors' social participation employed by policy-makers in each country.