Earlier quoted context omitted.
This is a bit disingenuous. A 4-day work week usually means that a work week is reduced from 40 to 32 hours without a loss of compensation. Like previous reductions in work time, the theory is that while someone puts in fewer hours, it’s worth it because people can’t be fully productive for 40 hours. Your linked offer is a part-time position. It even states that you only get a cut of FTE and that there is the possibi…
To me as a Dutch person, that's not disingenious at all, that is exactly what you want. You go from a 5 day workweek to 4 days, and take a 20% paycut. Sometimes it's possible to work 4 days of 9 hours, but it always comes with a paycut.
See e.g.:
https://en.wikipedia.org/wiki/Four-day_workweek#Active_trial...
[1] In fact, if you work >= 6 months for a Dutch employer, you can request moving to a part-time schedule and they can only reject this request unless they have very good reasons:
https://www.intermediair.nl/werk-privebalans/rolverdeling/we...