Anytime you work less that 40 hours, take some vacation pay. Like last week I only worked 30 hours so I asked for 10 vacation hours so I would get paid fo 40. All you have to do is fill out the form on max self service
where it says "use my vacation" I get 3 weeks ov vacation a year but I only take one week off. I save the other 80 hours for when my hours get cut and I'm low on money.