Employment in Switzerland: Work and residence permits adapted to your situation (B/L/EU-EFTA).
Self-employment : Specific establishment requirements; business plan and resources.
Change of status: Studies → employment; family reunification → activity, etc.
Renewal / Refusal: Preparing a renewal or contesting a cantonal decision.
B, L, C permits and EU/EFTA status; choice according to duration and situation.
Varies according to canton and case; several weeks to several months.
Depending on your permit and status, check the conditions of your authorization.
A cantonal administrative appeal is possible within the legal time limits.
Not compulsory, but useful for securing the file and avoiding delays.