Detailed information on entry into, residence and work permits in Switzerland can be found here on the website of the State Secretariat for Migration (SEM).
More practical information on your entry into and residence in Switzerland can be found here on the ch.ch website.
FAQ – Frequently asked questions (SEM)
Registration for short-term work for EU/EFTA nationals
Foreign workers from the EU/EFTA countries can work in Switzerland without a permit, but with compulsory registration, for up to 90 working days per calendar year.
More information can be found here on the website of the State Secretariat for Migration (SEM).
You can register here online with the Federal Ministry of Justice and Police (FMJP).