The Dutch came last in something and it's a good thing!
Well, mainly ;-)
Here in the Netherlands working parttime is very common. About 9,3 million people work. The 0,3 is unemployed, and the remaining 9 million is split 50/50 in working fulltime (35-40 hours) and parttime (less than 35 hours). The parttime work is also made easier because having a childcare system. Which definitely isn't perfect, it is expensive and some people say they work to pay for the childcare. And then it's up to the parents to decide. Also nowadays, housing is expensive here. You need a double income to get a good mortgage for a nice family house.
Downside: For some positions it is required to work full time, or at least 32 hours. If you work less, you have to increase your hours. Most of the parttime workers are women. If you work only a few hours a week, you are not the one getting promoted. Which results in less women in high up positions. There are campaigns to improve that, but it does go very slowly.
When it comes to national holidays, we have a lot less than for example France.
It's New Years Day, Easter, King's Day, Pentecost, Ascension, Christmas. So that's no holidays between May/June and December.
Why, thank you!
Here in NL it is considered bad time management when you stay arrive early/stay late, put in more hours than you get paid for (structurally). It means you or the company is doing something wrong. Either you are not efficient, or the company let's the work of 2 people to be done by one.
And recently, it's also seen as that you are not taking care of yourself. Work/Life balance is a huge thing here.