KOICHI USAMI has been studying on social policies and welfare states in Latina America and Asia. His major works are: Comparative Study of Social Security Systems in Asia and Latin America: A Contribution to the Study of Emerging Welfare State' in The Developing Economies, Vol. XLII No. 2, 2004; 'Latin American Social Security Reform in the 1990s' (Junji Nakagawa ed.) Managing Development: Globalization, Economic Restructuring and Social Policy (London: Routledge, 2006).