A short nap during the day may increase efficiency and concentration levels, even if it interrupts the working day.
You may feel more refreshed and your head clearer after a power nap, especially after lunch, when the body is mostly busy digesting.
The best time for a short nap is between 2 and 4 p.m. -- any later and you may not be able to go to sleep at night.
The ideal duration of a proper power nap is 10 to 15 minutes, and no more than 20 minutes.
One out of four workers changed jobs last year, as they were forced to quit.
According to Statistics Korea, the number of workers forced to leave their jobs stood at roughly 720,000 in 2013, up more than 100,000 from the previous year.
About half of them were laid off, while others had their temporary job contracts expire.
Lower-income workers were hit the hardest. The number of layoffs in the bottom 20 percent income bracket soared to 65,000 last year from 26,000 in 2012.
