<Abstract> Revitalization Strategy of Labor Movements Korea Labour& Society Institute 1. The stagnation of trade union movement is an international phenomenon. The acceleration of globalization and technological innovation, the expanding predominance of service industries in the economies of advanced industrialised countries and the concomitant shifts in the composition of employment, and the deepening of neoliberal policy climate in the context of economic slow-down, which have prevailed since the 1980s, have all contributed to the stagnation of trade union movement in most countries across the world. This phenomenon has been captured through such indicators as the decline in union density, the weakening of political and social influence, and decentralisation of collective bargaining have been, among others. The trade union movements in different countries have, however, since 1990s, developed and undertaken a variety of"revitalisation"strategies to wake out of the stagnation. The specific shape of the revitalisation strategy were informed by the specific nature of the challenge the unions faced, the characteristics of the industrial relations system in which the unions were constituted, and the historical identity individual trade union movement espoused. However, organising efforts, internal innovation, social partnership, strengthening of political campaign activities, and extension of solidarity with civil society and community networks have featured as common components in most of the varied strategies. The evidence of these common initiatives points to the existence of some common challenge that courses through the country-specific situations the trade union movements in different countries have found themselves in. This study examines the strategic responses of the trade unions in the selected countries have undertaken in the face of the challenges faced by the international labour movement. It focuses on identifying lesson to be gained from the comparative survey for the trade union movement in Korea which is also found to face similar challenges. 1