I'm working as a student research assistant (HiWi) at a research group in a German university. My job is based on hours and it's mainly programming. In my contract I have to work 20 hours a month. Since I can work anywhere, then I usually work at home. Also things are so flexible, so some days I work 5 hours a day and other times 2 hours a day. My supervisor trusts me, so basically I just tell him how many hours I worked a month or so. Because sometimes I work less hours in one month but then I have to compensate for it in the next month.
However, when I'm counting my working hours I usually don't count the days where we have vacations. If you divide 20 hours by the days of the month then I would usually need to work 1 hour everyday. So if I was working in a normal job, then I would have that day off. But because of the flexible way of the job, then I'm not sure if I should subtract that time-per-day vacation time from my official working hours.
Does anyone know if HiWis in Germany are subject to vacations? Or should we work the full working hours mentioned in our contracts regardless of how many vacations are there in the contract?!
Edit: yeah I know that I can ask my supervisor, but I don't want to open such a dialogue now with him. I know that HiWi contracts are standard in Germany so I guess any professor or postdoc in a German Uni here can answer this :)