Research Interests

• Impact evaluation

• Firm dynamics

• Human resource management

• Wage inequality

Publications

• The Great Separation: Top Earner Segregation at Work in High-Income Countries. American Journal of Sociology, forthcoming. (2025 Roger V. Gould Prize of American Journal of Sociology) (with Olivier Godechot, Paula Apascaritei, István Boza, Lasse Henriksen, Are Skeie Hermansen, Feng Hou, Naomi Kodama, Alena Křížková, Jiwook Jung, Marta Elvira, Silvia Maja Melzer, Eunmi Mun, Halil Sabanci, Max Thaning, Nina Bandelj, Alexis Baudour, Dustin Avent-Holt, Aleksandra Kanjuo-Mrčela, Zoltán Lippényi, Andrew Penner, Trond Petersen, Andreja Poje, William Rainey, Mirna Safi, Matthew Soener, and Donald Tomaskovic-Devey)

• Has Japan’s work style reform had the intended effect? Applied Economics, 2024. 57(21), 2757-2780. (with Kohei Takahashi, Kentaro Arita, Haruka Kazama, Saisuke Sakai, Masaya Takeuchi, and Hideo Owan)

• Using Managers' Expectations for Ex-ante Policy Evaluation: Evidence from the COVID-19 Crisis. Journal of Economics & Management Strategy. March 2023. (with Kohei Kawaguchi, Hiroshi Kumanomido, and Mari Tanaka)

• Income inequality, higher education, and marriage behavior in Japan. Bulletin of Research Institute of Economic Science (College of Economics, Nihon University). 2023. 53: 5-22.

• Labor Market Concentration and Heterogeneous Effects on Wages: Evidence from Japan. Journal of the Japanese and International Economies. 2023. Vol.67. (with Atsuko Izumi, and Hyeog Ug Kwon) 

• Ups and downs in finance, ups without downs in inequality. Socio-Economic Review. 2022. 15. (with  Olivier Godechot, Nils Neumann, Paula Apascaritei, István Boza, Martin Hallsten, Lasse Henriksen, Are Hermansen, Feng Hou, Jiwook Jung, Alena Křížková, Zoltán Lippényi, Elvira Marta, Silvia Maja Melzer, Eunmi Mun, Halil Sabanci, Matthew Soener, and Max Thaning)

• Within-Job Gender Pay Inequality in 15 Countries. Nature Human Behaviour. 2022. 7(2), 184-189.  (with A. Penner, T. Petersen, A. Rainey, I. Boza, M. Elvira, O. Godechot, M. Hällsten, L. Henriksen, A. Hermansen, F. Hou, A. Kanjuo-Mrčela, J. King, T. Kristal, A. Křížková, Z. Lippényi, S. M. Melzer, E. Mun, D. Avent-Holt, N. Bandelj, G. Hajdu, J. Jung, A. Poje, M. Safi, M. Soener, D. Tomaskovic-Devey, and Z. Tufail)

• No Successor, No Success? The Impact of a Little Son on Business Performance. Journal of the Japanese and International Economies, 2021. forthcoming. (with Yoshiaki Murakami, and Mari Tanaka).

• Small Business under the COVID-19 Crisis: Expected Short- and Medium-Run Effects of Anti-Contagion and Economic Policies. Journal of the Japanese and International Economies, 2021. forthcoming. (with Kohei Kawaguchi, and Mari Tanaka). data&code

• Meritocracy at Work?: Merit-Based Reward Systems and Gender Wage Inequality. Social Forces, 2021. 100: 1561-1591.  (with Eunmi Mun). 

• Rising between-workplace inequalities in high-income countries. Proceedings of the National Academy of Sciences of the United States of America. April 28, 2020. 117(17): 9277-9283. (with Donald Tomaskovic-Devey, Anthony Rainey, Dustin Avent-Holt, Nina Bandelj, István Boza, David Cort, Olivier Godechot, Gergely Hajdu, Martin Hällsten, Lasse Folke Henriksen, Are-Skeie Hermansen, Feng Hou, Jiwook Jung, Aleksandra Kanjuo-Mrčela, Joe King, Alena Krizkova, Zoltán Lippényi, Silvia Maja Melzer, Eunmi Mun, Andrew Penner, Trond Petersen, Andreja Poje, Mirna Safi, Max Thaning, Zaibu Tufail). 

• Occupations, Workplaces, or Jobs?: An Exploration of Stratification Contexts Using Administrative Data.  Research in Social Stratification and Mobility. Dec. 2020.(with Avent-Holt,Dustin, Anna Hagglund, Lasse Folke Henriksen, Jiwook Jung, Silvia Melzer, Eunmi Mun, Anthony Rainey, and Donald Tomaskovic-Devey) 

• Inequality through Wage Response to the Business Cycle -Evidence from the FFL Decomposition Method-.  Journal of the Japanese and International Economies, March 2019. 51, 87-98. (with Izumi Yokoyama and Yoshio Higuchi)

• Effects of state-sponsored human capital investment on the selection of training type. Japan and the World Economy, March 2019. 49 40–49. (with Izumi Yokoyama, and Yoshio Higuchi) 

• Why the Earnings of the Middle Class Declined: Evidence from Japan. Applied Economics Letters, Feb 2019. 26(2), 152-156. (with Izumi Yokoyama)

• Transplanting Corporate Culture across International Borders: FDI and Female Employment in Japan. World Economy,  June 2018, 40(5), 1148-1165. (with Beata S. Javorcik, and Yukiko Abe)

• The Labor Market Effects of Increases in Social Insurance Premium: Evidence from Japan. Oxford Bulletin of Economics and Statistics, Aug 2018, 80(5), 992-1019. (with Izumi Yokoyama)

• Deregulating Overtime Hours Restrictions on Women and its Effects on Female Employment: Evidence from a Natural Experiment in Japan. Oxford Bulletin of Economics and Statistics, May 2018, 80(4), 804-821. (with Takao Kato)

• The Effect of Corporate Social Responsibility on Gender Diversity in the Workplace: Econometric Evidence from Japan. British Journal of Industrial Relations,  Feb 2018, 56(1), 99-127. (with Takao Kato)

• The Impact of Globalization on Establishment-Level Employment Dynamics in Japan. Asian Economic Papers,  June 2015,  14(2), 41–65. (with Tomohiko Inui)

• A Decomposition of the Decline in Japanese Nominal Wages in the 1990s and 2000s. Seoul Journal of Economics, June 2015, 28(1), 54-84. (with Tomohiko Inui, and Hyeogug Kwon)

• Markups, Productivity and External Market Development: an empirical analysis using small service firms’ data. Applied Economics, Sep 2014, 46(29), 3601-3608. (with Atsuyuki Kato)

• Gender difference in the probability of success in starting business turns negligible when controlling for the managerial experience. Applied Economics Letters,  March 2011, 18(13), 1237-41. (with Kazuhiko Odaki)

• Effects of Work-Life Balance Programs on Female Employment. Japan Labor Review, Oct. 2007, 4(4), 97-119.

Publications (in Japanese)

• 「自治体のデータ利活用と研究者とのコラボの現状と課題」. 日本労働研究雑誌. No.779. 40-52. 2025年6月.（小原美紀・佐野晋平・森山智彦と共著）

• 「競業避止義務の経済的分析」. 公正取引.No.893. 45-50. 2025年3月.（泉敦子・神林龍と共著）

• 「最低賃金上昇は労働時間を抑制するか？」. 日本労働研究雑誌. No. 771. 84-100. 2024年9月.（桃田翔平と共著）

• 「労使間の交渉力の変化と賃金停滞」. 連合総研レポートDIO（公益財団法人連合総合生活開発研究所）. No. 397. 15-18. 2024年5月.

• 「職場におけるジェンダー・ギャップとマネジメント・プラクティス」. 一橋ビジネスレビュー, 東洋経済新報社. 71(1), 56-67. 2023年6月. 

• 「世帯構造の変化と家族による共助の弱体化：非婚化・晩婚化・同類婚と所得格差拡大」. 経済分析. 2022年11月.

• 「人材獲得競争と企業のインセンティブ」. 日本経済法学会年報. 第43 号. 2022年9月.（泉敦子と共著）

• 「職場におけるジェンダー格差と賃金制度」, 経済セミナー2022年4・5月号. 28-34. 

• 「新型コロナ下の小規模企業－短期的、中長期的な感染症対策と経済の両立」, 統計. 2021年11月.12-17. 

• 「働き方改革の広がりと生産性への効果」 一橋ビジネスレビュー, 68(4), 8-23. 東洋経済新報社. 2021年3月. (有田賢太郎・酒井才介・高橋孝平と共著)

• 「認知能力・非認知能力スコアを用いた人材活用」経済分析, 199, 95-121. 2019年6月. (乾友彦・園田友樹・横山泉・内藤淳・仁田光彦と共著)

• 「景気変動と賃金格差」経済分析, 195, 34-61.  2017年11月. (横山泉と共著）

• 「なぜ就業継続率は上がったのか－ワーク・ライフ・バランス施策は少子化対策として有効か」経済研究, 68(4), 303-323. 2017年9月. (阿部正浩・齋藤隆志と共著 )

• 「統計に見るダイバーシティー」統計, 68(10), 42-47. 2017年7月.

• 「地域別企業数の将来推計」フィナンシャル・レビュー：特集「人口減少と地方経済」平成29年第3号（通巻第131 号）, 71-96.  2017年6月. (村上義昭・樋口美雄と共著)

• 「顧客企業のグローバル化が下請企業のパフォーマンスに与える影響」経済統計研究, 第45巻第1号, 32-45. 2017年6月.

• 「管理職における男女間格差 －日本の従業員と企業のマッチングデータに基づく実証分析－」経済研究, 68(2), 114-131.  2017年4月. (馬欣欣・乾友彦と共著) 

• 「差別とは－経済学の観点から」日本労働研究雑誌, 681, 61-63. 2017年4月.

• 「女性の労働と税－データを用いた現状分析－」フィナンシャル・レビュー：特集「税制改革‐エビデンスに基づいた政策提言」平成28年第2号（通巻第127号）,49-76.  2016年11月. (横山泉と共著)

• 「大企業と中小企業の生産性格差の推移」経済統計研究, 第44巻第2号, 18-34. 2016年9月.

• 「日本企業の海外進出が国内雇用に与える影響」(2014) 経済統計研究, 第42巻第3号, 18-34. 2014年12月.

• 「価格決定力と生産性－サービス品質による差別化－」アジア太平洋討究, 第23巻, 247-265.  2014年8月. (加藤篤行と共著)

• 「1990年代から2000年代初めにかけての賃金低下の要因～誰の賃金が下がったのか～」経済統計研究, 第41巻第2号, 61-81. 2013年9月.

• 「都道府県別産業生産性（R-JIP）データベースの構築と地域間生産性格差の分析」経済研究, 64(3), 218-239.  2013年4月. (徳井丞次・牧野達治・深尾京司・宮川努・荒井信幸・新井園枝・乾友彦・川崎一泰・野口尚洋と共著)

• 「地域間の人的資本格差とその要因」経済研究, 64(3), 256-268.  2013年4月. (徳井丞次・牧野達治・深尾京司と共著)

• 「日系海外現地法人の日本側出資者向払金額の推移～日本に還元する資金は増えているのか～」経済統計研究, 第40巻第3号，12-32. 2012年12月.

• 「日本のLNG（液化天然ガス）の輸入、消費の現状」経済統計研究, 第40巻第1号, 111-124. 2012年6月.

• 「2つの大きなショックが製造業、サービス業に与えた影響～リーマンショックと東日本大震災を比較して～」 経済統計研究, 第39巻第3号, 12-25. 2011年12月.

• 「無回答誤差についての検討～工業統計調査とエネルギー消費統計調査の比較から～」経済統計研究, 第38巻第2号, 23-33. 2010年9月.

• 「介護保険導入と老後不安感、予備的貯蓄」経済論集, 第45巻第2号, 103-126. 2008年6月. (鈴木亘・小滝一彦と共著) 

• 「女性雇用と企業業績」日本経済研究, 52, 1-18. 2005年10月. (小滝一彦・高橋陽子と共著)

Working papers 

• Non-Compete Agreements: Human Capital Investments or Compensated Wages? CPRC-DP CPDP-97-E. (with Ryo Kambayashi, and Atsuko Izumi)

• Labor Market Concentration on Wage, Employment, and Exit of Plants: Empirical Evidence with Minimum Wage Hike, CPRC Discussion Paper Series CPDP-77-E. (with Atsuko Izumi and Hyeog Ug Kwon)

• Small Business under the COVID-19 Crisis: Expected Short- and Medium-Run Effects of Anti-Contagion and Economic Policies, (with Kohei Kawaguchi and Mari Tanaka)

       Additional descriptive reports (in Japanese): interim report in slides, RIETI special report 

• The Effects of Japanese Customer Firms' Overseas Outsourcing on Supplier Firms' Performance, RIETI Discussion Paper. (with Tomohiko Inui)

• The Consequence of Short-Time Compensation: Evidence from Japan, IZA Discussion Paper. (with Takao Kato)

• Missing Growth in the Lost Decade. RIETI Discussion Paper. (with Huiyu Li)

• Days of Schooling and Educational Inequality: Evidence from schools with Saturday class in Japan, RIETI Discussion Paper. (with Tomohiko Inui, and Masaru Nagashima)

• Manager characteristics and firm performance, RIETI Discussion Paper. (with Huiyu Li)

• Work-Life Balance Practices, Performance-Related Pay, and Gender Equality in the Workplace: Evidence from Japan, IZA Discussion Paper.  (with Takao Kato)

• The Unfairness Trap: A Key Missing Factor in the Economic Theory of Discrimination, Harvard Business School Working Paper.  (with Jordan Siegel, and Hanna Halaburda)

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Working papers (in Japanese)

• 「タスク特性と雇用、賃金、生産性の変化」, JILPT Discussion Paper Series 22-SJ-06. 2022. (荻島駿・権赫旭と共著)

• 「働き方改革の広がりと実効性」. RIETI Discussion Paper Series 21-J-021. 2021. (高橋孝平・有田賢太郎・大湾秀雄・風間春香・酒井才介・竹内誠也と共著)

Book Chapters

• Women in the Workplace and Management Practices: Theory and Evidence. (2018) Oxford Handbook of Women and the Economy, ed. Susan L. Averett, Laura M. Argys and Saul D. Hoffman, 561-593. (New York: Oxford University Press). (with Takao Kato)

Research Grants

• 2025 Project Research Program of Joint Usage and Research Center (1 years, co-PI), Hitotsubashi University

• 2023 Project Research Program of Joint Usage and Research Center (2 years, PI), Hitotsubashi University

• 2021 Grants-in-Aid for Scientific Research (Kiban B) (4 years, PI), JSPS

• 2020 Grants-in-Aid for Scientific Research (Kiban A) (4 years, co-PI), JSPS

• 2020 crowdfunding (co-PI), Academist

• 2019 Grants-in-Aid for Scientific Research (Kiban B) (4 years, co-PI), JSPS

• 2018 Grants-in-Aid for Scientific Research (Kiban B) (3 years, PI), JSPS

• 2018 Grants-in-Aid for Scientific Research (Kiban A) (4 years, co-PI), JSPS

• 2017 Project Research Program of Joint Usage and Research Center (1 year, PI), Hitotsubashi University

• 2016 Grants-in-Aid for Scientific Research (Kiban A) (3 years, co-PI), JSPS

• 2016 Grants-in-Aid for Scientific Research (Kiban B) (3 years, co-PI), JSPS

• 2015 Grants-in-Aid for Scientific Research (Kiban C) (4 years, co-PI), JSPS

• 2015 Project Research Program of Joint Usage and Research Center (1 year, co-PI), Hitotsubashi University

• 2014 Grants-in-Aid for Scientific Research (3 years, PI), JSPS

• 2014 Project Research Program of Joint Usage and Research Center (1 year, co-PI), Hitotsubashi University