Indeed, my employer (Netherlands) is also quite flexible here. Problem is that it almost always comes at the cost of promotions. I've never seen someone who wor

Indeed, my employer (Netherlands) is also quite flexible here. Problem is that it almost always comes at the cost of promotions. I've never seen someone who works parttime get promoted. Everyone who gets promoted works full-time. In other words, going part-time is a commitment to the job-level you're in, in my experience. It signals to management you're good, reliable, ready to stay in that position perpetually and do a decent job, but not up for anything ambitious. Whether this is true is a different story, but it's how in my experience it gets interpreted. That works fine if you're a 45 year old parent making 2x the median wage in a mid-level manager position working 36 hours (one week 5 days one week 4 days), 32 hours (4 days a week) etc, because your salary doesn't need to grow, plus even at parttime its sufficient. But at the start of your career making 70% of the median wage, going parttime both hurts career growth and isn't always financially feasible.