And this is the case for both women with children and those without.
"The common feeling is that it has to do with kids and families. We are not equal at home, and then the women double work more than the men. But we see that even women without kids are more stressed than males with kids," said Daniel Lind, the union's policy director.
"It's not only a matter of how you get the work-life balance together, but what happens at work. That is a new finding."
The union represents workers with high degrees in the social sciences – primarily economists, sociologists and politics graduates, but also lawyers, some medics, and people with higher business degrees.