Social security for foreign employees in Switzerland
A practical guide to Swiss social security for foreign employees, cross-border workers, secondments, and payroll cases.
Fenja Brockmann
A practical employer guide to Swiss social security for foreign employees, including AHV/AVS, A1 certificates, secondments, cross-border work, remote work, and payroll checks.
Short answer
Foreign employees who live or work in Switzerland are usually covered by the Swiss social security system. This can include AHV/AVS old-age and survivors' insurance, disability insurance, income compensation, unemployment insurance, occupational pension, accident insurance, and family allowances. But secondments, cross-border work, EU/EFTA coordination rules, UK rules, and bilateral social security treaties can change which country is responsible.
The main question is not only nationality. Employers should check where the employee works, where they live, who employs them, whether they are temporarily posted, whether an A1 or treaty certificate applies, and whether Swiss payroll registration is needed.
💡 Check the Swiss hire feasibility. Permitree gives employers the likely Swiss route, timeline, document checklist, costs, risks, and process overview before they move into the full hiring or mobility case.
The simple rule
For social security, start with this practical rule:
If a person lives or works in Switzerland, Swiss social security may apply.
Then check whether an exception or coordination rule changes the answer. The most common exceptions are temporary postings, A1 certificates, bilateral social security treaties, or multi-country work rules.
Permitree practice point: immigration approval and social security coverage are related, but they are not the same. A person can have a Swiss work permit and still need a separate social security review. A person can have an A1 certificate and still need Swiss work authorization.
Quick scenario table
Scenario | Likely social security question | Typical document or action |
|---|---|---|
Employee hired locally by a Swiss employer | Swiss social security usually applies. | Swiss payroll registration and deductions. |
EU/EFTA employee temporarily posted to Switzerland | Home-country coverage may continue if posting rules are met. | A1 certificate. |
Employee from treaty country posted to Switzerland | Home-country coverage may continue under the treaty. | Certificate of coverage or treaty form. |
Employee from non-treaty country works in Switzerland | Swiss coverage may apply, and home-country coverage may also need checking. | Swiss registration plus home-country review. |
Cross-border worker lives abroad and works in Switzerland | Swiss coverage often applies, but multi-state work can change this. | Swiss payroll or A1/multi-state decision. |
Employee lives in Switzerland and works for a foreign employer | Swiss social security may apply through ANOBAG or another setup. | Compensation office registration and insurance checks. |
This table is a starting point. The exact answer depends on the countries, work pattern, employer setup, and treaty position.
What Swiss social security includes
Swiss social security is not one single tax. It is a system of several insurances and contribution duties.
For employees, the main areas can include:
AHV/AVS: old-age and survivors' insurance
IV/AI: disability insurance
EO/APG: income compensation
ALV/AC: unemployment insurance
BVG/LPP: occupational pension, if thresholds are met
UVG/LAA: accident insurance
family allowances
health insurance, depending on residence and exemption rules
The exact contribution setup depends on whether the person is locally employed, posted, cross-border, self-employed, ANOBAG, or covered by a treaty.
Local Swiss employment
If a foreign employee is hired by a Swiss employer and works in Switzerland, Swiss social security usually applies.
The Swiss employer normally:
registers with the competent compensation office
deducts employee social security contributions from salary
pays employer contributions
arranges accident insurance
arranges occupational pension if the employee meets the threshold
reports salary correctly through payroll
handles family allowance obligations where applicable
For the employee, this means Swiss social security contributions are normally deducted from Swiss payroll.
Secondments and A1 certificates
A secondment means an employee is temporarily sent to Switzerland by a foreign employer while staying employed abroad.
For EU/EFTA cases, an A1 certificate can show that the employee remains covered by the home country's social security system during the posting. In many standard EU/EFTA postings, the ordinary posting period is up to 24 months. If the assignment is expected to be longer, a special agreement may be needed, and current Swiss practice often treats longer extensions as possible only within a total posting period of around five or six years.
For non-EU/EFTA treaty countries, a certificate of coverage or similar treaty form may be used instead of an A1. The rules and maximum posting periods depend on the specific treaty.
An A1 or certificate of coverage does not prove:
Swiss immigration approval
Swiss notification filing
Swiss wage compliance
Swiss tax compliance
right to start work before permit or notification approval
It only helps answer which country's social security system applies.
EU/EFTA, UK, treaty, and non-treaty cases
Social security rules are different depending on the country connection.
EU/EFTA cases are usually governed by coordination rules connected to the Agreement on the Free Movement of Persons and the EFTA framework. The A1 certificate is the key document for postings and multi-state work.
UK cases are no longer handled exactly like EU cases after Brexit. Switzerland and the UK have their own social security coordination framework. Employers should check the current UK-Swiss position before relying on old EU assumptions.
Treaty-country cases depend on the bilateral social security agreement. Switzerland has agreements with many countries, but the covered benefits and posting durations can differ.
Non-treaty cases can be more difficult. If there is no agreement, the employee may have Swiss social security obligations and may also remain exposed to home-country obligations. This can create double coverage risk.
Permitree practice point: do not assume all “foreign employees” are treated the same. The difference between EU/EFTA, UK, treaty country, and non-treaty country can change the answer completely.
Cross-border workers and multi-country work
A cross-border worker lives outside Switzerland and works in Switzerland. In many simple cases, Swiss social security applies because the work is performed in Switzerland.
But if the employee works in more than one country, multi-state rules may change the answer. Under EU/EFTA coordination, if an employee performs a substantial part of their work in their country of residence, often understood as at least 25% of working time or remuneration, the residence country's social security system may apply.
Example: an employee lives in France, works partly in France from home and partly in Switzerland for a Swiss employer. If the French work reaches the relevant threshold, the social security country may need a multi-state assessment.
Telework and remote work
Remote work can change social security. It is not only an immigration or tax question.
Switzerland participates in telework arrangements with certain EU/EFTA states. In some cases, cross-border employees may work up to 50% from home in their state of residence while remaining covered by the employer state's social security system, if the formal conditions are met and a request is filed.
This does not apply automatically to every country or every remote-work setup. Employers should check:
where the employee lives
where the employer is located
how much time is worked from each country
whether the countries are covered by the telework framework
whether a request must be filed
whether tax rules follow the same answer, because often they do not
ANOBAG and foreign employers without Swiss payroll
ANOBAG means an employee without an employer liable to pay Swiss contributions. It can be relevant when a person lives or works in Switzerland for a foreign employer that has no Swiss contribution obligation.
In ANOBAG-type setups, Swiss social security may still apply even though the employer is abroad. The employee may need to register with the compensation office and handle contributions and insurance obligations in a special way.
ANOBAG is not an immigration permission. A foreign national still needs the right to live and work in Switzerland.
Permitree practice point: ANOBAG solves only one part of the puzzle. It does not automatically solve work permits, tax, health insurance, accident insurance, or permanent establishment risk.
Accident insurance, pension, and health insurance
Employers should not stop at AHV/AVS.
Accident insurance can be compulsory for employees working in Switzerland. Occupational pension can be required if the employee is subject to Swiss social security and meets salary and employment thresholds. Health insurance may also be required for residents, unless an exemption applies.
For posted workers, accident and health coverage should be checked carefully because the person may remain insured abroad, may need private coverage, or may need Swiss coverage depending on the case.
For family members, health insurance and social security questions may be separate from the employee's work authorization.
Documents employers should collect
For social security review, employers should usually collect:
passport or ID copy
nationality and residence status
work permit or notification route
employment contract
assignment letter
payroll country and salary details
home and Swiss work locations
expected working days in each country
remote-work pattern
A1 certificate or equivalent certificate of coverage
proof that A1 or certificate has been requested, if not yet issued
Swiss compensation office registration, if applicable
accident insurance proof
occupational pension setup, if applicable
health insurance position
tax and payroll assessment for cross-border or remote cases
For multi-country cases, employers should also document the expected percentage of working time in each country.
Common employer mistakes
Common mistakes include:
treating A1 as a work permit
assuming a Swiss work permit automatically solves social security
forgetting social security for posted workers on foreign payroll
ignoring remote work from a home country
not tracking multi-country work percentages
assuming EU/EFTA, UK, treaty, and non-treaty countries all work the same way
missing accident insurance or occupational pension requirements
treating ANOBAG as an immigration route
failing to keep documents ready for inspection
waiting until payroll is already running to check coverage
Social security errors can be hard to fix later because they affect payroll, insurance, benefits, and contribution records.
Questions asked by employees
Will I pay Swiss social security if I work in Switzerland?
Usually yes if you are locally employed in Switzerland. If you are temporarily posted, cross-border, or working in more than one country, an A1 certificate, treaty rule, or multi-state rule may change the answer.
What is an A1 certificate?
An A1 certificate shows which country's social security system covers you during a temporary posting or multi-country work situation. It is not a work permit.
Can I stay in my home social security system during a Swiss assignment?
Possibly. This usually requires a valid A1 certificate or treaty certificate, and the assignment must meet the relevant posting rules.
Does my Swiss permit decide social security?
No. Your permit controls residence and work authorization. Social security is a separate question, although both should be checked together.
If I work partly from home abroad, does Swiss social security still apply?
It depends on the countries involved and how much work you do in each country. EU/EFTA multi-state and telework rules can change the result.
Questions employers should be ready to answer
Where will the employee physically work?
Social security depends heavily on work location and residence. Get the weekly or monthly work pattern before payroll starts.
Is this local employment or a temporary posting?
Local Swiss employment usually leads to Swiss social security. Temporary postings may allow home-country coverage if the right certificate is issued.
Do we have the A1 or certificate of coverage?
For posted or multi-country cases, request it before the assignment starts where possible. Keep proof in the file.
Is there a treaty with the employee's home country?
Treaty and non-treaty cases can have very different outcomes. Check before assuming home-country coverage continues.
Who should review payroll and contributions?
Payroll or social security specialists should review the contribution setup, especially for cross-border, remote-work, ANOBAG, and non-treaty cases.
How Permitree helps
Permitree helps People, Legal, HR, founders, and global mobility teams connect Swiss immigration decisions with social security, A1, secondment, payroll, and tax checks. Permitree helps identify whether Swiss social security likely applies, whether A1 or treaty coverage may be relevant, and what documents the employer should prepare before work starts.
Permitree Check is the entry point. It gives employers the likely route, timeline, document checklist, cost inputs, risk flags, and process overview. From there, Permitree supports the broader case across work permits, assignments, posted workers, A1 certificates, payroll, tax withholding, family relocation, spouse work rights, and employer compliance.
💡 Check the Swiss hire feasibility. Permitree gives employers the likely Swiss route, timeline, document checklist, costs, risks, and process overview before they move into the full hiring or mobility case.
FAQ
Legal references
Swiss Federal Act on Old-Age and Survivors' Insurance, AHVG/LAVS
Swiss Federal Act on Disability Insurance, IVG/LAI
Swiss Federal Act on Income Compensation, EOG/LAPG
Swiss unemployment insurance rules, AVIG/LACI
Swiss occupational pension rules, BVG/LPP
Swiss accident insurance rules, UVG/LAA
Agreement on the Free Movement of Persons, AFMP/FZA
EFTA Convention social security coordination
EU Regulation (EC) No 883/2004 and Regulation (EC) No 987/2009, where applicable through Swiss-EU coordination
Swiss bilateral social security agreements with treaty countries
Posted Workers Act, EntsG, where assignments to Switzerland are involved
