Assistant Research Fellow, Institute of Economics, Academia Sinica. 


         Shifting from Pay-as-You-Go to Individual Retirement Accounts: A Path to a Sustainable Pension System 
Atsuko Tanaka and Po-Shyan Wu)Journal of Macroeconomics, 69, September 2021.
          Working paper version: PDF, online appendix: PDF 

        Employee Investment and Screening based on Labor Force Attachment (with Atsuko Tanaka),
Economics Bulletin
40 (2), 1349-1356, May 2020.
          Working paper version: PDF, online appendix: PDF 

          Pension Reform in Taiwan: a Macroeconomic Analysis (with Atsuko Tanaka and Yu-Hsiang Cheng),
Taiwan Economic Review, 48 (1), 1-30, March 2020
          Working paper version: PDF 

Competitive Dominance of Emission Trading over Pigouvian Taxation in a Globalized Economy (with Seung-Gyu Sim),
Economics LettersVol 163, Pages 158–161, February 2018 
Working paper versionPDF

Working Papers:

        Between Lives and Economy: Optimal COVID-19 Containment Policy in Open Economies 
Wen-Tai Hsu and Han Yang)
          Latest Version: February 2021 
          Full Paper: PDF, SSRN online appendix: PDF 

        Optimal Insurance Contracts with Limited Commitment and Unobservable Disability 
Kyoungjin Choi, Junkee Jeon, and Hoseok Lee)   
          Latest Version: January 2021 
          Full Paper: PDF, SSRN 

        College Loans and Post-Schooling Skill Accumulation 
(with Chao Fu, and Atsuko Tanaka)   
          Latest Version: May 2019. 
          Full Paper: PDF 

Optimal Disability Insurance and Unemployment Insurance with Cyclical Fluctuations
Latest Version: May 2019. 
Full Paper: draft available upon request

Ongoing Research Projects:
  • Statistical Discrimination, Occupational Sorting, and Career Opportunities 
  • Efficient Allocations in a Dynamic Moral Hazard Economy (with Noah Williams)
  • Disability Insurance and the Business Cycles: A Structural Model and Estimation (with Atsuko Tanaka)

Masters Thesis: Large Deviations from the Hydrodynamic Limit of the Generalized Symmetric Exclusion Process
Latest Version: June 2007.