How much of the local language do you need for daily living? Are local language classes/tutors available and affordable?
English is widely spoken so it is not strictly necessary but German would be quite helpful. French is useful for travelling around the country. But again, not strictly necessary. - Jan 2020
Local language is Swiss, can get by with German, some French. - Oct 2019
ENGLISH IS SPOKEN VIRTUALLY EVERYWHERE. - Jan 2011
Not much, most Swiss speak some English. You can also find French and Italian speakers too. - Feb 2009