I am a Professor of Economics at Chungbuk National University (CBNU), South Korea. I received my Ph.D. from the department of economics at the University of Arizona, U.S.A. in 2011, was a faculty member at Korea Army Academy at Yeong-cheon (KAAY) from 2005-2021. My research interests are labor economics and applied microeconomics, particularly for economics of education, labor market impact of job mismatch (incl. skill/educational mismatch), gender differences in labor market outcomes, and the economic status of minorities (incl. people with disabilities). Recent publications include "Are highly educated young women underutilized? Gendere differences in the wage penalties of overqualifcation in South Korea (2026)", "The Over-education wage penalty across the wage distribution: A case study of STEM PhD holders in South Korea (2025)", "Glass ceiling or sticky floor? Evidence from a distributional approach of the gender wage gap among PhD holders in South Korea (2023)", "Determinants of job satisfaction among doctorate holders: Focusing on the relationship between over-education and job satisfaction in South Korea (2022)", "Doctoral education, job mismatch, and wage consequences in South Korea: A propensity score matching approach (2022)", "Qualification, job mismatch, and workers with disabilities" (2021) and "Education-job mismatch and gender wage gap: Evidence from recent college graduates in Korea" (2021).