Three regimes decide the answer: which country’s social security covers the work (the EU 25 % rule, the 49.9 % telework framework, or a bilateral agreement), where you are tax resident, and whether the employer acquires a taxable presence where you sit. Pick a country for the specific reading; the full guide explains the rules once.
EU/EFTA, telework framework signed
Telework up to 49.9 % of working time from home keeps Swiss AHV and Pillar 2; from 50 %, and fully remote, the country of residence covers you.
EU/EFTA, telework framework not signed
Only the EU baseline applies: under 25 % of working time at home keeps Swiss social security.
Bilateral social-security agreement
The agreements typically cover postings of up to about five years; living there permanently on a Swiss contract is a different case.
No agreement with Switzerland
No agreement Remotli could confirm: long-term, Swiss social security generally cannot be maintained.
Reviewed 8 September 2026.