It's long been suggested that in developed countries, women who work full time tend to have fewer babies.
But data from the OECD seem to show otherwise.
The Korean Association of Public Finance studied OECD data from the years 1990 to 2016.
It found a positive correlation between women working outside the home and the total fertility rate of zero.zero-9 to zero.1-3.
That includes variables such as the number of hours worked, maternity leave, and the pay gap.
The researchers said, for one thing, they found a positive impact on total fertility from the increase in household income brought in by women who work outside the home.