I'm a school bus driver. Our district has a policy that for paid holidays (e.g. Labor Day) you have to show up for the work day prior and the work day following, or you don't get paid for that holiday. This is ostensibly to prevent people from stretching a three-day weekend into four or five consecutive days off by taking pretend sick leave. I was a white-collar worker (programmer) for my whole career before this and never encountered any kind of rule like this.