She had several kids in a row by timing their birth perfectly so that she never has to work. And obviously, for each kid the parents get parental leave. Not that hard and far too common of a thing to do here.
https://www.forsakringskassan.se/privatpers/foralder/nar_bar...
But what´s your point? it could be one cent on the dollar, that does not change a thing for me as a business owner though. It isnt the money that is the primary problem even though it is a problem.
I’ve been on parental leave myself and my small employer hired a replacement, and by the time I got back we were both needed because they ran a successful and expanding business.