Research Activities

Research Projects

Evolving Migrants: How Family Migration Shapes Economy and Society (2022_2_40_016)


An important issue in policy debates on international migration is how the gains and costs from immigration are shared. The gains and costs are crucially related to the household structures of foreign populations, which may change over time. The aim of this project, entitled “Evolving Migrants,” is to study the transition from the influx of individual migrant workers to immigration of families and subsequent formation of immigrant households. However family migration broadly affects the economy and society of host countries, it is not clear how changes in the household characteristics of foreign populations affect the gains and costs from immigration. The project aims to empirically characterize changes and diversity in the household behavior of foreign workers in Japan over the last four decades. The project also aims to theoretically develop a collective household model of foreign populations in order to understand the impacts of growing foreign populations from the following channels of household decisions: bargaining, intrahousehold resource allocation, outsourcing of home production, housing, location decisions, consumption, childcare, education, or cultural production. Our alternative model incorporates these realistic and multi-dimensional features of longer-term households decisions of foreign populations. To contribute to Japanese immigration policy, we combine qualitative analysis with quantitative research examining how family migration has reshaped the economy and society under the COVID-19 pandemic in Japan.


April 2022 - March 2024

Leader of the Research Project

Yamaguchi, Mami


The Ajia Keizai, Paper Submission to Peer-Reviewed Journal