I don't know, but I'm not even concerned with that. For one, I'm not a Swiss citizen - I'd have work rights through my EU citizenship. Second, with any work that I do, I want to be successful. If everyone is speaking German, I'm not going to be too productive. If they can handle my English or Italian, then we're in business.

I live in the US, and it's common to want certain language(s) for our various roles. We don't have a national language ourselves.