The purpose of this article is to explore the following questions: (1) How could Singapore develop a pattern such as welfare-unionism while concurrently maintaining an authoritarian rule? (2) What are the factors rendering the tripartite relations in Singapore so special? (3) What methods or role does the People Action Party (PAP), the ruling party, adopt in this course? (4) What are the constituent elements of the tripartite consultative mechanisms set by the PAP? As for the theoretical approach, the perspective of historical institutionalism is adopted to examine the PAP's mobilization experience as well as the forms and methods in the tripartite consultative mechanisms. It is thought that these two factors are the reasons for Singapore's virtually unique pattern.