According to data released Friday by Statistics Korea, 2.8 million mothers with non-adult children had a job this past April, and the vast majority of them -- nearly 2.3 million -- had paid jobs.
But more than 40 percent of moms who earned money had relatively low monthly incomes of less than 1,680 U.S. dollars.
Around 10 percent of them earned less than 840 dollars a month, and 33 percent were somewhere in between. Only 13 percent made more than 3,360 dollars.
Another issue they face is employment stability. While seven in ten paid workers were employed full-time, three in ten were contingent.
Whether a mother was employed or not was also correlated with how many children they had and how old they were.
Those with multiple children had a lower employment rate than those with just one child, and the younger the child, the less likely it was that the mother would be working.
Mothers whose youngest child was below 6 years old had an employment rate of under 50 percent. But for those whose youngest was between 7 and 12, 61 percent had a job, and that rose to 66 percent for moms with kids aged 13 to 17.
Meanwhile, moms were working fewer hours a week, on average, compared to a year earlier.
The decline, according to Statistics Korea, was caused in part by the new system limiting the work week to 52 hours.
Kim Jae-hee, Arirang News.