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KOREKAWA Yu Director
Department of International Research and Cooperation
Updated; 1 April 2020

Research Fields

  • International Migration of Japan, Migration Policy of Japan, Socio-economic Integration of Migrants in Japan, Micro-Simulation, Social Demography

Research Projects

    ・Population Projection of Japan (in-house project)
    ・The National Fertility Survey(in-house project)
    ・The National Survey on Migration (in-house project)
    ・Demographic Study on the Longevity Revolution(in-house project)
    ・Survey on Emigration Pressure in Asia (in-house project)
    ・Cooperation with International Organizations (Cooperation with International Migration Division, OECD)(in-house project)
    ・Demographic Analysis and Population Projection from International and Regional Perspectives and Their Applicationfor to the New Trend of Low-Fertility and Aging (Grants-in-Aid for Scientific Research, MHLW)
    ・Panel Survey on International Migrants in Japan (PSIJ) (Grants-in-Aid for Scientific Research, JSPS)

External Activities

  • Academic Society
    Population Association of Japan
    Population Association of America
    Japan Sociological Society
    Japan Association for Migration Policy Studies
    Asian Population Association
  • Other Activities
      Bureau Member, Working Party on Migration, OECD (2018-2021)
      Expert, Expert Group on Migration(SOPEMI), OECD (2013-)
      Delegate, Working Party on Migration, OECD (2013-)
      Lecturer, Graduate School of Medicine, University of Tokyo (2019-)
      Delegate, 8th Global Forum on Migration and Development (2015)
      Research Fellow, "Le project AXA Mortality Divergence and Causes of Death", INED, France (2014-2015)
      Lecturer, Graduate School of Medicine, University of Tokyo (2019-)
      Lecturer, Faculty of Human Life and Environmental Sciences, Ochanomizu University (2020-)
      Certified Advanced Social Researcher (Japanese Association for Social Research)
      Ph.D. in Sociology (University of Tokyo)

    • Publications /Presentations

      The newest information is also here

    • --Academic Distinctions--
    • Award for a Distinguished Book 2017, The Association of Japanese Geographers, 2018 (as one of the authors)
    • Travel Award, Annual Meeting of Population Association of America, 2017
    • Award for a Distinguished Research Paper, Population Association of Japan, 2016
    • --Grants--
    • (Head)
    • "Panel-Survey on International Migrants in Japan (PSIJ)" (Grant-in-Aid for Young Scientists (A), FY2017-20, JSPS)
    • "Contract for Intellectural Services Relative to Migration Reform", (Research Grant, FY2014, OECD）
    • "Labour Market Integration of Foreigners in Japan",（Research Grant, FY2013, OECD）
    • (Member)
    • "Marriage, Divorce and Remarriage in Japan: Trends, Causes and Social Implications"（Head: Iwasawa, Miho(National Institute of Population and Social Security Research), Grants-in-Aid for Scientific Research A, FY2013-17, JSPS）
    • "Comprehensive Study on New Demographic Trends and Changing Life-Courses Based on Contemporary Analysis of the Demographic Transitions"（Head: Kaneko, Ryuichi(National Institute of Population and Social Security Research), Grants-in-Aid for Scientific Research B, FY2014-18, JSPS）
    • "Study on Demographic Change and Its Impact on Social Security from Immigrant Incorporation into Japan"（Head: Ishii, Futoshi(National Institute of Population and Social Security Research), Grants-in-Aid for Scientific Research, FY2011-12, MHLW）
    • "Contribution of Japan's international migrants in times of population decline" (Head: Ishikawa, Yoshitaka(Kyoto University),Grants-in-Aid for Scientific Research A, FY2012）
    • --Refereed Papers--
    • "Impacts of the Incorporation of Immigrant Workers to the Japanese Labor Market: Their Economic Achievement and its Determinants", Yu KOREKAWA, Journal of Population Problems 71(2), pp.122-40. Jun. 2015
    • "Foreign Women's Fertility in Japan; an Analysis by Micro-data of the Japanese Population Census," Yu KOREKAWA, Journal of Population Problems 69(4), pp.86-102. Dec. 2013
    • "An Effect of Migration Process on Immigrant Women’s Fertility in Japan," Yu KOREKAWA, Japanese Sociological Review 64(1), pp.109-27. Jun 2013
    • "An impact of settlements of foreigners on mortality trend; analysis by the changing of the foreign population classified by statuses of residence," Yu KOREKAWA, The Journal of Population Studies (47) 1-23 May 2011
    • "Current situation and causes of foreign residents' ethnic residential segregation in Japan by dissimilarity index: an analysis from a small-areal data of Japanese census," Yu KOREKAWA, The Journal of Population Studies (44) 1-17 May 2009
    • "The role of an ethnic network in the selection of a residential area by foreigners living in Japan: An analysis based on the population migration theory using national census data," Yu KOREKAWA, Japanese Sociological Review 59(3) 495-513 Dec 2008
    • --Books--
    • "Immigrants Occupational Attainment in Japan" , Yu KOREKAWA, IN Yoshitaka Ishikawa Eds. International Migrants in Japan- Contriburions in an Era of Population Decline, pp.3-22. Trans pacific Press and Kyoto University Press, 2015
    • --Working/Discussion/Conference Papers--
    • "Analyzing Immigrants’ Integration into the Japanese Labor Market with Immigrant Assimilation Model (IAM)," Yu KOREKAWA, IPSS Working Paper Series (J), No.18, National Institute of Population and Social Security Research, pp.1-47,2018,
    • "Analyzing Immigrants’ Social Integration in Japan from Gender Perspective," Yu KOREKAWA, IPSS Working Paper Series (J), No.17, National Institute of Population and Social Security Research, pp.1-45,2018,
    • "Intergenerational Class Mobility of the Second Generation Immigrants in Japan: An Analysis using the Micro-data of the 2010 Japanese Population Census", Yu KOREKAWA,IPSS Working Paper Series (J),No.16, pp.1-32. Oct 2017
    • "Fertility of Immigrant Women in Japan",Yu KOREKAWA,（Full Paper, Invited Speaker, Cross-Border Marriage in Asia, PAA 2017, 2017/04, Chicago, U.S.)
    • "A Socioeconomic Status of Immigrant Women in Gendered Migratory Processes",Yu KOREKAWA,（Full Paper, 2014 Annual Meeting, Population Association of America, Apr. 2017, Chicago, U.S., Poster）
    • "Labour Market Integration of Foreigners in Japan" , Yu KOREKAWA,（Working Paper submitted to Working Party on Migration, OECD, 2014/06, Paris, France）
    • "An analysis of Japan's immigrant settlement process: social stratification, occupational attainment and intergenerational mobility," Yu KOREKAWA, ESRI, Discussion Paper Series (283) 1-29 Feb 2012
    • "North America: Growing Population, Race, Ethnicity and Religion," Yu KOREKAWA, Miho IWASAWA, ESRI Discussion Paper Series (226) 1-31 Nov 2009
    • --Misc.--
    • "Current and Mid-term Projection of Non-native Population in Japan: Consequence of the Migration Transition in the 1990s", Yu KOREKAWA, IN Ryuichi Kaneko Eds. Comprehensive Study on New Demographic Trends and Changing Life-Courses Based on Contemporary Analysis of the Demographic Transitions(Grants-in-Aid for Scientific Research, JSPS) pp.273-99（2017.03）
    • "Fertility of Immigran Women in Japan: An Analysis by Own-Children Method based on the Micro-data from the Population Census of Japan", Yu KOREKAWA, IN Futoshi Ishii eds. Comprehensive Study on Population Dynamics, Household Formation and Population Projection in Population Declining Era(Grants-in-Aid for Scientific Research, MHLW), pp.123-44.(2017.03)
    • "Low Fertility of Immigrant Women in Japan and its Determinants; the Shortage of Socio-economic Resources for Child Rearing and Unstable Marriages",Yu KOREKAWA, IN Futoshi Ishii eds. Comprehensive Study on Population Dynamics, Household Formation and Population Projection in Population Declining Era(Grants-in-Aid for Scientific Research, MHLW), pp.65-94, Mar. 2016
    • "Economic Achievement of Immigrant Women and Its Determinants; Impacts from Gender Relations",Yu KOREKAWA, IN Futoshi Ishii eds. Comprehensive Study on Population Dynamics, Household Formation and Population Projection in Population Declining Era(Grants-in-Aid for Scientific Research, MHLW), pp.131-162, Mar. 2015
    • "An Analysis on Aging of Japan in Terms of Causes of Deaths; A Needs for a Longtudinal Mortality Data", Yu KOREKAWA,IN Comprehensive Study on Aging and Longevity and their Demographic Impacts on Social Security System , pp.29-42. Mar. 2015
    • "The Change of Labour Market of Japan by "Feminization of Migrants"", Yu KOREKAWA, IN Ryuichi Kaneko eds. Study on the Population and Life Course Dynamics in the First and Second Demographic Transition and Their Future Prospects (Report for Grant-in-aid for scientific research, JSPS), 2014
    • "Immigrant Women's Fertility in Japan," Yu KOREKAWA, IN Futoshi Ishii eds. Incorporation of foreign-born population and its impact on future population dynamics and social security in Japan (Report for Grant-in-aid for scientific research, MHLW), Apr 2013
    • "Immigrant Occupational Attainment in Japan by Census Micro-data," Yu KOREKAWA, IN Yoshitaka ISHIKAWA eds. Examining contribution of foreign residents to contemporary Japan showing population decline (Report for Grant-in-aid for scientific research, JSPS), 2013
    • --Oral Presentations and Posters--
    • -Invited-
    • "Migration Transition in Japan and Its Consequence: Beyond the Japanese Exceptionalism",Yu KOREKAWA, (Panelist, For the Grand Design of Japan's Migration Policy: Reexamining the Immigration Control Regime, Symposium, The 2017 Annual Conference, Japan Association for Migration Policy Studies(JAMPS), 2017/05, Seijyo University, Tokyo, Japan)
    • "Fertility of Immigrant Women in Japan",Yu KOREKAWA,（Invited Speaker, Cross-Border Marriage in Asia, PAA 2017, 2017/04, Chicago, U.S.)
    • "Migration Transition in Japan and Its Demographic Consequence",Yu KOREKAWA（Keynote Speaker, The Annual Meeting of Population Association of Taiwan, Migration and Public Policy, 2017/04、National Taiwan University、Taipei, Taiwan）
    • "Demographic Aspects of International Immigrants in Japan",Yu KOREKAWA, (Lecture, coorganized by Akita International University and UC Berkeley,"2016 AIU-UCB PBL Summer Course, "Transnational Community and Immigrant Incorporation in Japan and the U.S."", 2016/07, National Institute of Population and Social Security Research, Tokyo, Japan)
    • "Is Japan really a closed country to immigrants?",Yu KOREKAWA, (Keynote Speaker/Panelist, coorganized by L'INSTITUT FRANCAIS DU JAPON (IFJ) and Sophia University, Debat d’idees franco-japonais "Quelle Politique Migratoire Pour Japon?", Sophia University, 2016/06, Tokyo, Japan)
    • "An Analysis on Economic Achievement and its Determinants of Immigrant Workers in Japan",Yu KOREKAWA,(Oral presentation, organized by Chinese University of Hong Kong "Migration Pattern in Asia", CUHK, 2016/06, Hong Kong SAR, China)
    • "Special workshop on Illegal employment of foreign workers: prevalence and policy responses",Yu KOREKAWA, (Discussant, Expert Group on Migration(SOPEMI), OECD, 2015/10, Paris, France）
    • "Demographic Aspects of International Immigrants in Japan",Yu KOREKAWA,（Lecture, coorganized by Akita International Universityand UC Berkeley, "GSP394-1Transnational Community and Immigrant Incorporation in Japan and the U.S." 2015/07, National Institute of Population and Social Security Research, Tokyo, Japan）
    • "Session 2: Japan in Asia - Exploring Japan's Strategy in the Face of Depopulation",Yu KOREKAWA, (Discussant, organized by Japan Center for International Exchange, Symposium: Asia on the Move? Regional Challenges & Lessons for Japan, United Nations University, 2015/06, Tokyo, Japan）
    • "Labour Market Integration of Foreigners in Japan",Yu KOREKAWA, （Oral presentation, Working Party on Migration, OECD,June, 2014, Paris, France)
    • "Feminization of Migrants in Japan",Yu KOREKAWA,Oral presentation, JICA and KNOMAD Seminar on“Migration and Development in a Graying Society and a Growing Economy” May, 2014, JICA Research Institute, Tokyo, Japan)
    • "The Diverging Destinies? Assessing Skill Portability of Foreign Workers in Japan",Yu KOREKAWA (Oral presenation, coorganized by ILO, ADBI and OECD, The 3rd Roundtable on Labor Migration: Assessing Labor Market Requirements for Foreign Workers and Policies for Regional Skills Mobility, Jun. 2013, Bangkok, Thailand)
    • -Others-
    • "A Socioeconomic Status of Immigrant Women in Gendered Migratory Processes",Yu KOREKAWA,（2014 Annual Meeting, Population Association of America, Apr. 2017, Chicago, U.S., Poster）
    • "A Socio-economic Status of Immigrant Women in the Gendered Migratory Processes；Are They "Double Disadvantaged"?",Yu KOREKAWA,(Demographic Change, Evolving Family Structure and Social Security, International Conference on Social Security, 2016/09, Oita, Japan, Oral）
    • "Reexamination of Migration Transition: The Case of Japan in the Post-war Period",Yu KOREKAWA (Theme Session: SDGs and Population Development, 2016 Annual Meeting of Population Association of Japan, 2016/06, Reitaku University, Chiba, Japan, Oral)
    • "Why Immigrant Women’s Fertilities Are Lower than that of the Native Women: An Analysis from the Own-Children Method Using the Micro-Data of the Japanese Population Census",Yu KOREKAWA, (2016 Annual Meeting of Population Association of America, Apr. 2016, Washington D.C., U.S.,Poster)
    • "Educational Attainment and its Determinants of Immigrant Children in Japan: Focusing on High School Enrollment",Yu KOREKAWA,(2016 Annual Meeting of Population Association of America, Mar. 2016, Washington D.C., U.S.,Poster)
    • "An Analysis on Economic Achievement for Immigrant Women in Japan, Facing the “Double Disadvantages”?",Yu KOREKAWA, （The 3rd APA Conference, Jun.2015, Kuala Lumpur, Malaysia, Oral）
    • "Immigrant Occupational Attainment in Japan and Its Determinants; Is It a "Structured Settlement"?",Yu KOREKAWA,（International Sociological Society, Jul. 2014, Yokohama、Japan, Oral）
    • "Immigrant Occupational Attainment in Japan and Its Determinants; Is It a "Structured Settlement"?",Yu KOREKAWA,（European Population Conference, Jun. 2014, Budapest, Hungary, Poster）
    • "The Change of Gender Relations Caused by the Inflow of Immigrant Women in Japan",Yu KOREKAWA,（The 66th Annual Meeting of Population Association of Japan、General Session E, Jun. 2014, Tokyo, Japan, Oral）
    • "Immigrant Occupational Attainment in Japan and Its Determinants; Is It a "Structured Settlement"?",Yu KOREKAWA,（2014 Annual Meeting, Population Association of America, Apr. 2014, Boston, US, Poster）
    • "International Migrants in the Post-Demographic Transitional Societies",Yu KOREKAWA, (The 86th Annual Meeting of Japanese Sociological Society, Oct. 2013. Tokyo, Japan, Oral)
    • "Immigrant Occupational Attainment in Japan: An Analysis by Census Micro Data",Yu KOREKAWA, (The 65th Annual Meeting of Population Association of Japan, Jun. 2013, Sapporo, Japan, Oral)
    • "Fertility of Immigrant Women in Japan; An Analysis by Own-children Method using Census Data",Yu KOREKAWA, (The 64th Annual Meeting of Population Association of Japan, Jun. 2012, Tokyo, Japan, Oral)
    • "Social Inequality of Contemporary Japan: A View from International Migration",Yu KOREKAWA, (The 84th Annual Meeting of Japanese Sociological Society, Sep. 2011. Osaka, Japan, Oral)
    • "Fertility of Foreign Women in Japan: A View from Status of Residence",Yu KOREKAWA, (The 83rd Annual Meeting of Japanese Sociological Society, Sep. 2010. Nagoya, Japan, Oral)
    • "Mortality of Foreigners from Developing Countries in Japan",Yu KOREKAWA, (The 62nd Annual Meeting of Population Association of Japan, Jun. 2010, Tokyo, Japan, Oral)
    • "Ethnic Residential Segregation and Its Determinants in Japan: An Analysis from Dissimilarity Index",Yu KOREKAWA, (The 82nd Annual Meeting of Japanese Sociological Society, Sep. 2009. Tokyo, Japan, Oral)
    • "A Role of Ethnic-Network in Determining a Residential Area of Foreigners in Japan",Yu KOREKAWA, (The 61st Annual Meeting of Population Association of Japan, Jun. 2009, Osaka, Japan, Oral)
    • "Ethnic Residential Segregation in Japan in Foreigner-Concentrated Municipalities",Yu KOREKAWA, (2008 Annual Meeting of Population Association of America, Jun. 2008, New Orelans, US, Poster)

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