I now work in the food manufacturing and we don't officially get bank holidays off. We don't have to take them and can use the holidays elsewhere, which is useful. I would have liked today off but since the factory is producing it was insisted I was in and I'm doing very little since all my suppliers are off today so it's not like I can fix any issues anyway. They nearly forced the factory to produce on Monday meaning the shop floor staff would have only had Sunday off.... There was rumour of a strike so they quickly rearranged the plan.
I don't even think they're unionised. More like them thinking "fuck working all Easter" - they're majority Polish and fairly religious so I don't blame them for actually wanting some time off rather than working constantly.