Korea’s income gap between men and women is the biggest among member countries of the Organization for Economic Cooperation and Development.

In 2010, Korean men who worked full time received a median wage that was 39 percent higher than their female counterparts, almost the same as the 40 percent extra they made 10 years ago.

The latest figure was the highest among the 25 countries surveyed, followed by Japan with 28.7 percent and Finland with 21.2 percent. Hungary had the lowest gap with 3.9 percent.

Despite the government’s efforts for gender equality and equal pay, big pay differentials and long working hours remain a perennial problem in the world’s 15th-largest economy.