About half of all married couples in South Korea continued to work during the COVID-19 outbreak last year.
But that figure has still fallen for the second year in a row.
According to Statistics Korea on Tuesday, the number of double-income households in South Korea totaled 5.6 million in 2020 down 69-thousand from the previous year.
This accounts for 45 percent of all married households in the country.
Last year's decline was mostly attributed to the pandemic, which had a profound impact on the job market.
"The reason why double-income households decreased is that business in wholesale, retail, restaurants and lodging have struggled last year - sectors where they are usually employed."
The number of double-income households with children aged under 18 has also fallen for two straight years.
The figure dropped to 2.2 million last year, down 82-thousand from a year earlier.
This partly comes as more parents quit their jobs to take care of their children after schools turned to remote learning amid the virus outbreak.
In terms of working hours, double-income couples worked an average of 39.8 hours last year, 1.3 hours less than in 2019.
Meanwhile, the proportion of adults who live alone in South Korea is rising.
The number of single-person households reached 6.2 million in 2020, up 175-thousand on-year.
They now make up 30 percent of all households in the country for the first time.
The employment rate for single-person households, however, fell by 1.2 percentage points to just under 60 percent.
One in every three single-person households earned less than 1,700 U.S. dollars a month.
Min Suk-hyen, Arirang News.