We're talking about startups on a website mostly for programmers, right?
Programmers enjoy nearly free work schedule. I've seen people come at work at 7 in the morning and leave at three in the evening. Or come to work at 10 and leave at 7.
Second, work-life balance is paramount in Sweden. No one will bat an eye if you have to pick your kids early from kindergarten/school, go to a doctor's appointment, take a day off because you're sick etc.
The government even tries to combat exploitative employers by making it mandatory that employees take at least 20 days of vacation a year.