Bolder measures needed to offer more decent jobs The gap in household income widened further in the fourth quarter of last year because of the slumping economy amid the third wave of the COVID-19 pandemic here. According to Statistics Korea, the earned monthly income of the bottom 20 percent of households plunged 13.2 percent to 596,000 won ($536), while that of the top 20 percent grew 1.8 perce..