How will the Difference in People’s Network Structure Have Impact on Japanese Public Pension System?

In this article, we would like to clarify how spreading people’s distrust in Japanese public pension system through their network would have effect on pension premium fund. For the sake of clarifying them, firstly, we implement various network models. Secondly, using several network indices, we examined each network model in terms of the fitness with real people’s network. As a result, it is concluded that two models have good fit for real people’s network. The propagation of distrust in public pension system through network, which is implemented into two models, leads to a large decrease in pension premium fund. In addition, it is clarified that agents whom the value of betweeness centrality is high yield this result.