Korean workers are being paid less in recent years, even though their productivity has increased.
The Korea Institute of Finance says the gap between wages and productivity in Korea has grown since the 2008 financial crisis.
Korea had the fourth largest wage gap,.. after England, Japan and Israel.
The survey excluded Portugal, Italy, Ireland, Greece, Spain and countries that are not among the top 40 countries in the world for per capita GDP.
The report also showed productivity had increased by nearly ten percent over the same period.