Modern social policy emerges within the constitutional framework of nation-states to protect the well-being and basic living standards of citizens within a nation's territory. As the trade and circulation of goods around the world and the process of economic globalization deepen, concepts about social solidarity, justice and redistribution have gradually spread to all parts of the world. This block seminar is based on the basic conceptual framework of modern social policy and welfare state, focusing on how international governmental organizations and non-governmental organizations have influenced the reform of pension insurance and the establishment of medical protection systems around the world. At the same time, this block seminar also focuses on the issues of global income inequality and social inequality, discussing the economic and social gap between the global North and the South. In particular, it will focus on various welfare programs that shorten the North-South divide in the world society.