This study, based on the perspective of simple democratic model, uses policy argument analysis method to analyze the development of pension policy in Taiwan, Hong Kong and Singapore, and to discuss the influence of democratization on social welfare policy in East Asia. The conclusion of this study shows that global economic competition helps to promote the pension systems that encourage workfare. Due to strong party competition and vivid development of civil society, however, governments of Taiwan and Singapore have compromised to increase their pension policies. Conversely, Hong Kong, due to politics-led government, has the most unequal distribution in its pension policy. In the cases of Taiwan, Hong Kong and Singapore, we have found that the influence of democratic development is meaningful on welfare policy in the era of globalization.