Re: Working in Summer in Switzerland as a Foreign Student?
I have looked, but sorry, I've also not been able to find any rules or laws about this.
I suggest you ask at the University where you are studying... they usually have some sort of employment office for students, or maybe an advice centre for foreign students, and perhaps they will be able to explain to you how much you are, and are not, allowed to work during the summer break.
Then, I suggest you go down to the city/municipality immigrants' office, the same place where you are registered to study here, and from where you got your permit, and ask them to show you the law to confirm (or disprove) whatever the people at the university told you. Than you'll have it in writing.
Perhaps you are allowed not just x hours per week, but x hours per week averaged over the year, or something like that. Sorry I don't know more.