Sebastian (I.S.) Buhai, PhD: Brief résumé with links (November 2025)
For a detailed Curriculum Vitae please download the extended PDF version.

Current/ Recent Academic Affiliations

Since 11/2014, I have been Associated Researcher at the Swedish Institute for Social Research (SOFI), Stockholm University. As of 10/2025, I am also Visiting Researcher at the Instituto de Economía, Pontificia Universidad Católica de Chile (UC Chile) in Santiago. I moreover have a long-standing research association with the NIPE center at the University of Minho in Braga, and since 11/2018 I have also been a periodic Visiting Researcher (in residence for 1-2 week recurrent intervals) at the Microdata Research Laboratory (BPLim) of Banco de Portugal in Porto. Finally, I also hold ongoing remote scientific appointments at several other institutions, including IZA Bonn.

From 09/2018 to 08/2025 I was Visiting Researcher at the Center for Economic Research and its Applications (CEPREMAP) in Paris. From 10/2017 to 09/2018, I was also Advanced Fellow of the STAR-UBB Institute, Babes-Bolyai University in Cluj-Napoca. Between 01/2015 and 04/2015, I was Visiting Professor at the Einaudi Institute for Economics and Finance (EIEF) in Rome. From 05/2013 to 10/2014, I was Visiting Faculty at the Department of Economics, Stockholm University. Between 05/2010-05/2013, I was Marie Curie International Outgoing Fellow (IOF) at the Department of Economics, Northwestern University & Department of Economics and Business, Aarhus University. It was an honor to have Dale Mortensen mentor during my IOF—and beyond.

Main Research Interests

Microeconometrics, Labor Economics, IO, Applied Microeconomics, Social and Economic Networks

Degree Education

• 2008 (November): Ph.D. in Economics, Tinbergen Institute/ Erasmus University Rotterdam
• 2003: M.Phil. in Economics, Tinbergen Institute
• 2001: B.Sc. in Sciences (Mathematics/ Theoretical Physics), University College Utrecht/ Utrecht University
• 2001: B.A. in Social Sciences (Economics/ Law/ Political Sciences), Univ. College Utrecht/ Utrecht University

Published and Other Completed Research

* I maintain a much more detailed page on my Economics research including titles/ synopses of work in progress.

Peer-reviewed academic journal publications of original research:

• Returns to Tenure or Seniority? (with Miguel Portela, Coen Teulings & Aico van Vuuren), March 2014, Econometrica, 82 (2), pages 705–730, DOI: 10.3982/ECTA8688 . See also the corresponding Web Appendix or the older July 2009 version (includes theory framework)
• Tenure Profiles and Efficient Separation in a Stochastic Productivity Model (with Coen Teulings), May 2014, Journal of Business and Economic Statistics, 32:2, pages 245-258, DOI:10.1080/07350015.2013.866568. See also the corresponding Web Appendix or the accepted, non-gated, November 2013 version
• How Productive is Workplace Health and Safety? (with Elena Cottini & Niels Westergaard-Nielsen), Oct 2017, Scandinavian Journal of Economics, 119(4), pages 1086-1104, DOI:10.1111/sjoe.12184. See also the corresponding Online Appendix or the non-gated, December 2015 version
• A Social Network Analysis of Occupational Segregation (with Marco van der Leij), Feb 2023, Journal of Economic Dynamics and Control, 147, 104593, DOI:10.1016/j.jedc.2022.104593. See also the accepted, non-gated Dec 2022 version.
  

Selected unpublished research, in downloadable working paper format:

• Reputation and Disclosure in Dynamic Networks
• Wage Dispersion, On-the-Job Search, and Stochastic Match Productivity: A Mean Field Game Approach
• Real Option AI: Reversibility, Silence, and the Release Ladder
• Firm Downsizing, Public Policy, and the Age Structure of Employment Adjustments (with Hans-Martin von Gaudecker)

Books, monographs, and research review articles:

• Buhai, I.S. (2008), “Essays on Labour Markets: Worker-Firm Dynamics, Occupational Segregation and Workplace Conditions” (digital version also accessible via the EUR online repository), PhD Thesis November 2008, Tinbergen Institute and Erasmus University Rotterdam, published as book at Thela Thesis -Academic Publishing Services, ISBN 978-90-5170-921-6, Amsterdam, The Netherlands
• Buhai, I.S. (2006), “Wages, Seniority and Separation Rates in a Stochastic Productivity Model: A Comparative Perspective“, M.Phil. Thesis May 2003, Tinbergen Institute and Erasmus University Rotterdam, published in 2006 as monograph at Editura Stiintifica “Lumen” (“Lumen” Scientific Publishing House), ISBN-10 973-7766-51-2, Iasi, Romania
• Buhai, I.S. (2005), “Quantile Regression: Overview and Selected Applications“, Ad-Astra Journal (Young Romanian Scientists’ Journal), Vol. 4
• Buhai, I.S. (2003), “Note on Panel Data Econometrics”, Netherlands Network of Economics (NAKE)’s “Nieuws”, Vol. 15 (2)

Selected academic contributions tangential to/ in other fields than Economics:

• Scientometrics/ Science Policy: Buhai, I.S., G.C. Silaghi, F.O. Bilbiie, A.G. Halunga, C.M. Litan, V. Midrigan, C. Pop-Eleches, Z. Sandor, M.C. Voia (2016), “The Rise for Academic Integrity in Romanian (Domestic) Economic Sciences“, DOI:10.5281/zenodo.1322737, scientific report/ manifesto concerning the state of the Economics research inside Romania
  
• Science Policy: Buhai, I.S., C.M. Litan and G.C. Silaghi (2015), “Demotivarea performantei: cazul criteriilor nationale de evaluare a cercetarii in Stiintele Economice din Romania” (translated title: “Disincentivizing the performance: the case of the Romanian national criteria for evaluating research in Economic Sciences”; you can also download an abstract in English or presentation slides in English), chapter in the 2015 Report of the Romanian Think Tank “Grupul de Analiza, Atitudine si Actiune in Politica Stiintei din Romania” (Raport 2015 – TT-G3A), Journal of Science Policy and Scientometrics/ Revista de Politica Stiintei si Scientometrie-Serie Noua, Vol 4(4)/Dec 2015, pp. 250-287, DOI: 10.5281/zenodo.1322726
• International Law: Buhai, I.S. (2006), “Customary Law Assessment and Aplications: Capital Punishment for Juvenile Offenders” (initial, ungated version), chapter in the volume “New Approaches in Humanistic Sciences” at Editura Stiintifica “Lumen” (“Lumen” Scientific Publishing House), ISBN-10 973-7766-74-1, Iasi, Romania
  
• Science Policy: Buhai, I.S. (2004), “Conditia Cercetatorului: Intre Realitatea de Acasa si Idealul din Afara” (in Romanian), Ad-Astra Journal (Young Romanian Scientists’ Journal), Vol 3 (2)
• Theoretical Physics: Buhai, I.S. (2001), “Classical Solutions to Double Oscillator Field Theory“, B.Sc. Honors Thesis, University College Utrecht, May 2001

For details and additional information please see my extended CV (PDF version).