This study explores the impact of improving individuals’ skills on labor market outcomes in Korea, analyzing how much skills could contribute to employment and wages. The major motivation behind the study is to explain the situation where the employment rate of the high-skilled group is not higher compared to the low-skilled group in Korea, which contrasts with other OECD member countries. Focusing on the demand-side factors, we propose the possibility that Korea could be in a state of low-skill equilibrium. In particular, skill depreciation of incumbent workers is considered as a major pathway towards low-skill equilibrium. While Korea is found to show the highest skill depreciation rate among OECD countries, our simulation results show th...