I've only really had four jobs. All retail and warehouse. So, it's kinda hard to decide which was the worst so I'm gonna go with the one I lasted one day on before walking out.
It was at a large garden centre. I spent the entire day standing behind the till. Standing. Assistants weren't allowed to sit down because they'd occasionally have to help a customer or move a large plant onto the checkout, which apparently the customer couldn't do?
Anyway I walked in the following morning and said it wasn't for me. I could have ghosted them, but I thought I owed them that much....Sods didn't pay me; fuck 'em.