Cover Story

The price of a good night’s sleep

It is well-known that South Koreans work too much and don’t get enough sleep. But as more Koreans become aware of the impact of sleep deprivation on health, memory, work productivity and other aspects of life, they are more willing to invest in a good night’s sleep.

Among them is Kang Hyo-jung, an office worker in Bucheon, west of Seoul. Sleepi...