Sasahara, Akira

写真a

Affiliation

Faculty of Economics (Mita)

Position

Associate Professor

E-mail Address

E-mail address

Related Websites

External Links
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Career 【 Display / hide 】

  • 2020.06
    -
    Present

    Keio University, Faculty of Economics, Associate Professor of Economics

  • 2017.08
    -
    2020.05

    University of Idaho, College of Business and Economics, Assistant Professor of Economics

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Academic Background 【 Display / hide 】

  • 2012.09
    -
    2017.06

    University of California, Davis, Economics Department

    United States, Graduate School, Completed, Doctoral course

  • 2009.04
    -
    2011.03

    Hitotsubashi University, Graduate School of Economics

    Graduate School, Completed, Master's course

  • 2005.04
    -
    2009.03

    Keio University, Business and Commerce

    University, Graduated

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Research Areas 【 Display / hide 】

  • Humanities & Social Sciences / Economic policy (International Economics)

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Research Themes 【 Display / hide 】

  • Empirical investigations on the employment effects of trade, 

    2016.01
    -
    Present

  • Empirical investigations on the effects of climate change, 

    2016.01
    -
    Present

  • Empirical assessments of the impacts of sovereign debt crises, 

    2016.01
    -
    Present

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Papers 【 Display / hide 】

  • Margins, concentration, and the performance of firms in international trade: Evidence from Japanese customs data

    Ito K., Endoh M., Jinji N., Matsuura T., Okubo T., Sasahara A.

    Journal of the Japanese and International Economies 75 2025.03

    ISSN  08891583

    　View Summary

    This study is the first to comprehensively investigate international trade at the firm-level using Japan's customs data for the 2014–2020 period. We first decompose international trade into the intensive and extensive margins and show that the intensive margin accounts for around 30% and 40% of the variation in partner country-specific exports and imports, respectively. We next find a substantial concentration of trading firms: in 2017, the top 10% of exporters accounted for 96.6% of all exports, while the top 10% of importers were responsible for 94.6% of all imports. Finally, we match the customs data with other firm-level datasets and estimate the performance premia of exporting firms. Our findings indicate that exporting manufacturing firms outperform non-exporting manufacturing firms in all aspects we consider: sales, value added, the number of employees, the capital-labor ratio, productivity, and wages. Interestingly, the exporter premia of manufacturing firms for value added, labor productivity, and total factor productivity decreased between 2014 and 2016 and then increased until 2019, whereas the exporter premium for the average wage steadily increased.

  • Costs of Sovereign Debt Crises: Restructuring Strategies and Bank Intermediation

    Tamon Asonuma, Marcos Chamon, Aitor Erce, Akira Sasahara

    Journal of International Economics (Elsevier)  152 ( November ) 104002 2024.09

    Research paper (scientific journal), Joint Work, Accepted,  ISSN  00221996

    　View Summary

    Sovereign debt restructurings are associated with declines in the growth of GDP, investment, bank credit to the private sector and capital flows. Our empirical findings show that the intensity of these losses depends on two aspects: whether the restructuring preempts a default and the extent of the reliance of the country's private sector on domestic bank credit. Post-default restructurings are associated with worse outcomes than restructurings that take place preemptively without missing payments and going into default. Much of that difference is driven by restructurings in countries with relatively large banking sectors, in particular during post-default episodes.

  • Importing Inputs for Climate Change Mitigation: The Case of Agricultural Productivity

    Rodrigo Garcia-Verdu, Alexis Meyer-Cirkel, Akira Sasahara, Hans Weisfeld

    Review of International Economics (Wiley)  30 ( 1 ) 34 - 56 2022.02

    Research paper (scientific journal), Joint Work, Accepted

  • Gains from Trade and the Sovereign Bond Market

    Ayumu Ken Kikkawa, Akira Sasahara

    European Economic Review (Elsevier)  124 2020.05

    Research paper (scientific journal), Joint Work, Accepted,  ISSN  0014-2921

  • Explaining the Employment Effect of Exports: Value-Added Content Matters

    Akira Sasahara

    Journal of the Japanese and International Economies (Elsevier)  52   1 - 12 2019.06

    Research paper (scientific journal), Single Work, Accepted,  ISSN  0889-1583

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Papers, etc., Registered in KOARA 【 Display / hide 】

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Reviews, Commentaries, etc. 【 Display / hide 】

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Presentations 【 Display / hide 】

  • Immigration and Human Capital Adjustments: Evidence from the 1990 Amendment to Japan’s Immigration Act

    Akira Sasahara

    The 2nd International SPACE Workshop (Shanghai Jiao Tong University) , 

    2025.05
    , 

    Oral presentation (general), Shanghai Jiao Tong University

  • Geopolitical Risk and Corporate Behaviors: Propagation of Shocks through Global Operations

    Akira Sasahara

    China-Japan Workshop on International Economics (Shanghai University of International Business and Economics) , 

    2025.04
    , 

    Oral presentation (general), Shanghai University of International Business and Economics

  • The Impact of a Natural Disaster on International Trade: A Natural Experiment from Typhoon Jebi Hitting an Airport

    Akira Sasahara

    The 83th Annual Meeting of the Japan Society of International Economics (Rokkodai 1st Campus, Kobe University) , 

    2024.10
    , 

    Oral presentation (general), Japan Society of International Economics

  • Immigration, Trade with China, and Labor Market Outcomes: Evidence from Japan

    Akira Sasahara

    Ajiken Power Lunch Seminar (The Institute of Developing Economies) , 

    2024.09
    , 

    Oral presentation (general), The Institute of Developing Economies

  • Immigration, Trade with China, and Labor Market Outcomes: Evidence from Japan

    Akira Sasahara

    International Economics Workshop (Kagawa University) , 

    2024.08
    , 

    Oral presentation (general), Kagawa University

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

  • Globalization, Climate Change, and Regional Economies: Interactions and Propagation of the Shock

    2024.04
    -
    2027.03

    Japan Society for the Promotion of Science, KAKENHI, Grant-in-Aid for Early-Career Scientists, Akira Sasahara, Principal investigator

  • Theoretical and Empirical Studies on the International Specialization in Japan and East Asia in the Era of Covid-19 and Beyond

    2022.04
    -
    2026.03

    Japan Society for the Promotion of Science, KAKENHI, Grand-in-Aid for Scientific Research (A), Fukunari Kimura, Kozo Kiyota, Toshiyuki Matsuura, Hisamitsu Saito, Kiyoyasu Tanaka, Kazunobu Hayakawa, Tadashi Ito, Toshihiro Okubo, Akira Sasahara, Coinvestigator(s)

  • The Impact of Global Shocks on Labor Markets: From Micro and Macro Perspectives

    2021.04
    -
    2025.03

    Japan Society for the Promotion of Science, KAKENHI, Grand-in-Aid for Scientific Research (B), Masahiro Endoh, Toshihiro Okubo, Sachiko Kazekami, Akira Sasahara, Coinvestigator(s)

  • Research on Globalization, Income, and Global Value Chains

    2021.04
    -
    2024.03

    Japan Society for the Promotion of Science, KAKENHI, Grant-in-Aid for Early-Career Scientists, Akira Sasahara, Principal investigator

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Awards 【 Display / hide 】

  • Thornton Faculty Excellence Award

    2019.04, College of Business and Economics, University of Idaho

    Type of Award： Other,  Country： United States

  • The Kojima Kiyoshi Prize for Excellent Papers

    2013, The Japan Society of International Economics

    Type of Award： Award from Japanese society, conference, symposium, etc.

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Courses Taught 【 Display / hide 】

  • TOPICS IN INTERNATIONAL ECONOMICS

    2025

  • SEMINAR: INTERNATIONAL ECONOMICS

    2025

  • RESEARCH SEMINAR D

    2025

  • RESEARCH SEMINAR C

    2025

  • RESEARCH SEMINAR B

    2025

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Courses Previously Taught 【 Display / hide 】

  • Advanced International Economics II

    Graduate School of Economics, Hitotsubashi University

    2021.04
    -
    2022.03
    , 

    Other, Lecture, Within own ｆaculty

  • Principles of Macroeconomics

    University of Idaho

    2020.04
    -
    2021.03
    , 

    Spring Semester, Lecture, Within own ｆaculty

  • Advanced International Economics II

    Graduate School of Economics, Hitotsubashi University

    2020.04
    -
    2021.03
    , 

    Other, Lecture, Within own ｆaculty

  • Econometrics

    University of Idaho

    2020.04
    -
    2021.03
    , 

    Spring Semester, Lecture, Within own ｆaculty

  • International Economics

    University of Idaho

    2019.04
    -
    2020.03
    , 

    Autumn Semester, Lecture, Within own ｆaculty

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Educational Activities and Special Notes 【 Display / hide 】

  • Open Class Lecturer, Faculty of Economics, Keio University

    2024.08

    , Special Affairs

  • Lecturer, International Trade, Keio Senior High School

    2023.05

    , Special Affairs

  • Guidance for Keio Economics Department, Keio Shiki Senior High School

    2022.07

    , Special Affairs

  • Lecturer, International Trade, Keio Senior High School

    2022.05

    , Special Affairs

  • Graduation Thesis Advisor, Keio University Correspondence Courses

    2021.09
    -
    Present

    , Special Affairs

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Social Activities 【 Display / hide 】

  • Project Member, Globalization and Regional Economies

    Research Institute of Economy, Trade and Industry (RIETI)

    , 
    2023.08
    -
    2026.01

  • Lecturer, International Microeconomics, Training on Finance and Economics

    Policy Research Institute, Ministry of Finance Japan

    , 
    2023.05

  • Project Member, Economic Policy Issues in the Global Economy

    Research Institute of Economy, Trade and Industry (RIETI)

    , 
    2023.02
    -
    2025.07

  • Lecturer, International Microeconomics, Training on Finance and Economics

    Policy Research Institute, Ministry of Finance Japan

    , 
    2022.05
    -
    2022.06

  • Visiting Researcher, Joint Project on Japan's Customs Data

    Policy Research Institute, Ministry of Finance Japan

    , 
    2022.04
    -
    2024.03

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Academic Activities 【 Display / hide 】

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Memberships in Academic Societies 【 Display / hide 】

  • International Economics and Finance Society (IEFS) Japan, 

    2021.08
    -
    Present

  • TCER Fellow (Tokyo Center for Economic Research), 

    2021.05
    -
    Present

  • Applied Regional Science Conference, 

    2020.10
    -
    Present

  • Urban Economics Association, 

    2018.11
    -
    Present

  • Western Economic Association International, 

    2017.03
    -
    Present

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Committee Experiences 【 Display / hide 】

  • 2025.01
    -
    2025.10

    The Program Committee, The 2025 Fall Meeting of the Japanese Economic Association, The Japanese Economic Association

  • 2023.10
    -
    2024.10

    The Program Committee, The 83rd Annual Meeting of the Japan Society of International Economics, The Japan Society of International Economics

  • 2023.07
    -
    Present

    The Student Event Organizing Committee, The Kanto Division of the Japan Society of International Economics

  • 2023.01
    -
    Present

    The Childcare Service Organizing Committee, Japanese Economic Association, The Japanese Economic Association

  • 2022.11
    -
    2026.10

    The Committee Member, The Kanto Division of the Japan Society of International Economics

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