SAITO Yukiko

Spatial Economics, Network Analysis, Industrial Organization

• Innovation, Globalization and Employment (March 13, 2023 - August 31, 2025)
• Dynamics of Inter-organizational Network and Firm Lifecycle (June 11, 2018 - June 30, 2020)
• Dynamics of Inter-organizational Network and Geography (May 31, 2016 - April 30, 2018)
• Geospatial Networks and Spillover Effects in Inter-organizational Economic Activities (September 30, 2014 - March 31, 2016)
• Inter-organizational and Inter-inventors Geographical Proximity and Networks (May 22, 2012 - March 31, 2014)

2002 Ph.D., Physics, University of Tokyo
1999 M.A., Physics, University of Tokyo
1997 B.A., Physics, University of Tokyo

2024 - present Professor, Faculty of Political Science and Economics, Waseda University
2019 - 2024 Associate Professor, Faculty of Political Science and Economics, Waseda University
2014 - 2018 Senior Fellow, Research Institute of Economy, Trade and Industry
2012 - 2014 Fellow, Research Institute of Economy, Trade and Industry
2007 - 2012 Senior Associate, Economic Research Center, Fujitsu Research Institute
2002 - 2007 Research Associate, Economic Research Center, Fujitsu Research Institute
1999 - 2002 Research Fellow (DC1), Japan Society for the Promotion of Science

Part-time
2018 - present Senior Fellow (Specially Appointed), Research Institute of Economy, Trade and Industry
2014 - 2017 Part-time Lecturer. Faculty of Commerce, Keio University
2011 - 2013 Visiting Research Officer, National Institute of Science and Technology Policy
2008 - 2010 Associate Professor, Institute of Economic Research, Hitotsubashi University
2006 - 2012 Research Committee, Research Institute of Economy, Trade and Industry
2004 - 2007 Part-time Researcher, CRD Association

Book Chapter

• “Geographical Spread of Interfirm Transaction Networks and the Great East Japan Earthquake,” in The Economics of Interfirm Networks, Springer Publishing, 2015
• “Strong customer/supplier relationships: A key to enterprise growth in Japan,” (with I. Uesugi) in High Growth Enterprises: What governments can do to make a difference, OECD Studies on SMEs and　Entrepreneurship, OECD Publishing, 2010

Reviewed Academic Papers

• “Robots and Employment: Evidence from Japan, 1978-2017,” (with D. Adachi and D. Kawaguchi), Journal of the Labor Economics, forthcoming
• “China’s impact on regional employment: Propagation through input–output linkages and co‐location patterns,” (with S. Kainuma), The World Economy, 45(11), November 2022, pp. 3559-3601
• “Supply Chain Disruptions: Evidence from the Great East Japan Earthquake,” (with V. M. Carvalho, M. Nirei and A. Tahbaz-Salehi), Quarterly Journal of Economics, 136(2), May 2021, pp. 1255-1321
• “Indirect trade and direct trade: Evidence from Japanese firm transaction data,” (with T. Ito), The World Economy, 44(2), February 2021, pp. 444-461
• “How does the global network of research collaboration affect the quality of innovation?,” (with T. Iino, H. Inoue and Y. Todo), Japanese Economic Review, 72, January 2021, pp. 5-48
• “Production Networks, Geography, and Firm Performance,” (with A. B. Bernard and A. Moxnes), Journal of Political Economy, 127 (2), April 2019, pp. 639-688
• “Localization of collaborations in knowledge creation,” (with H. Inoue and K. Nakajima), Annals of Regional Science 62 (1), February 2019, pp. 119-140
• “Indirect exports and wholesalers: Evidence from interfirm transaction network data,” (with D. Fujii and Y. Ono), Japan and the World Economy, Vol. 44, December 2017, pp. 35-47. (RIETI Discussion Paper Series, 16-E-068, May 2016)
• “Localization of knowledge-creating establishments,” (with H.Inoue and K, Nakajima), Japan and the World Economy, Vol. 43, September 2017, pp. 23-29. (RIETI Discussion Paper Series, 14-E-053, August 2014)
• “Business Perspectives - Labor income inequality in Japanese corporations and employee health: evidence from Japanese Health Insurance Society data,” (with T. Kouno), Problems and Perspectives in Management, Vol. 10, Issue 4, December 2012, pp. 49-56
• “Measuring economic localization: Evidence from Japanese firm-level data,” (with K. Nakajima and I. Uesugi), Journal of the Japanese and International Economies, Vol. 26, Issue 2, June 2012, pp. 201-220
• “The bursting of housing bubble as a jamming phase transition,” (with K. Nishinari, M. Iwamura and T. Watanabe), Journal of Physics: Conference Series 221, 2010, 012006
• “Do larger firms have more interfirm relationships?” (with T. Watanabe), Physica A, Vol. 383, Issue 1, September 2007, 158-163.

Others

• “COVID-19 created more zombie firms in Japan,” posted on VoxEU on November 13, 2022 (co-authored with G.H. Hong and A. Ito)
• “Human interactions and innovation: The case of the Spanish Influenza pandemic in Japan,” posted on VoxEU on October 29, 2022 (co-authored with H. Inoue, K. Nakajima, and T. Okazaki)
• “Firm exit patterns and the post-Covid cleansing mechanism: Evidence from Japan,” posted on VoxEU on February 25, 2021 (co-authored with G.H. Hong)
• “Robots and employment: Evidence from Japan, 1978-2017,” posted on VoxEU on February 9, 2021 (co-authored with D. Kawaguchi and D. Adachi)
• “Commuting zones in Japan,” posted on VoxEU on January 16, 2021 (co-authored with T. Fukai, D. Kawaguchi and D. Adachi)
• “Indirect trade and direct trade: Evidence from Japanese firm transaction data,” posted on VoxEU on April 16, 2019 (co-authored with T. Ito)
• “The Dynamics of Inter-firm Networks and Firm Growth,” posted on VoxEU on February 10, 2018 (co-authored with D. Fujii and T. Senga)
• “Firms’ transaction networks: New Japanese evidence on the role of intermediaries,” posted on VoxEU on September 4, 2015 (co-authored with Toshihiro Okubo and Yukako Ono)
• “Localisation in knowledge-creating activities: Evidence from Japanese patent data,” posted on VoxEU on February 11, 2015 (co-authored with Hiroyasu Inoue and Kentaro Nakajima)
• “Fast trains, supply networks, and firm performance,” posted on VoxEU on September 24, 2014 (co-authored with Andrew B. Bernard and Andreas Moxnes)
• “Supply-chain vulnerability: An analysis of the impact of earthquakes using micro data,” posted on VoxEU on December 15, 2013
• “Distance frictions and firm border effects in knowledge creation: Evidence from Japanese patent data,” posted on VoxEU on October 2013 (co-authored with Hiroyasu Inoue and Kentaro Nakajima)
• “Impact of localisation and urbanisation on productivity: Empirical analysis based on establishments data in Japan,” posted on VoxEU on September 10, 2012 (co-authored with Yoko Konishi)

• April 2020 - March 2025, Challenging Research (Pioneering) (#20K20511)
• April 2018 - March 2021, Grant-in-Aid for Scientific Research (B) (#18H00859)
• April 2016 - March 2019, Grant-in-Aid for Exploratory Research (#16K13367)
• April 2013 - March 2016, Grant-in-Aid for Young Scientists (B) (#25780181)
• April 2010 - March 2013, Grant-in-Aid for Young Scientists (B) (#22730191)
• April 2011 - March 2012, Encouraged Research Grand, Japan Center for Economic Research