Earlier quoted context omitted.
Pharmacies in Poland all operate on this rotating schedule, where at least one pharmacy in town is open 24h(they always post a sign saying where the nearest 24h pharmacy is). I have no idea if it's by law or just a thing that everyone does.
Yes, this is by law and it's a requirement for having a pharmacy operating license. Fun fact: in most of the world, medical personal like pharmacists can't go on strike.
The majority of what a pharmacy provides is repeat customers anyway. Despite regular customers planning badly pretty much all the time, the majority gets their medicine for a minimum of various weeks.
The participation of the strike in Netherlands wasn't high. It was pretty last minute idea by one frustrated worker. The reason was the increase in the aggression towards the people working in a pharmacy.
Source: I know someone working in a pharmacy.