Posted workers in Switzerland: employer duties

Posted workers in Switzerland are employees of a company based abroad who carry out work on Swiss soil for a limited period. The employment contract stays with the foreign employer. The work happens in Switzerland. That split creates duties that a standard relocation does not.

This page is written for the HR or mobility lead who has to decide whether a case is a posting or a relocation. It explains the logic, the questions authorities ask, and the preparation that sits with the employer.

Posting or relocation: the first decision

A posting is a service delivered in Switzerland by a foreign business. A relocation is a move of the employee's working life and home to Switzerland. The two are treated differently by the authorities, and the paperwork follows the classification.

Typical posting indicators:

the employee remains on the foreign payroll and under the foreign contract;
the work is tied to a defined project, contract or client delivery;
the employee keeps a home abroad and returns when the task ends;
the Swiss element is temporary by nature, not an open-ended role.

Typical relocation indicators:

a Swiss employer or a Swiss branch hires or takes over the contract;
the employee takes up residence in Switzerland;
the role has no planned end date.

A mixed case is common. A transferee may start as a posted worker and later convert to a local contract. Treat the change as a new decision, not a continuation. The employee relocation overview covers the residence-based route.

From project idea to first working day in Switzerland

Two regimes, two starting points

Switzerland applies two admission regimes. One covers nationals of the EU and EFTA states, based on the free movement agreement. The other covers nationals of third countries, under the Foreign Nationals and Integration Act. The State Secretariat for Migration (SEM) publishes the basic framework for both.

For an EU/EFTA national, short service assignments can follow a lighter procedure than a permit application. The conditions, the maximum duration and the notification rules are set by the authorities and depend on the sector and the case. This page does not state them as figures. Confirm them with the competent cantonal office before the start date is fixed.

For a third-country national, the route is stricter. Qualification and labour market criteria apply, and the employer usually leads the application. Plan time for it. Use the permit finder for a first orientation, then have a specialist review the file.

Many HR teams from the United Kingdom, the United States, India, Canada, China, Japan, the Gulf and Australia find that nationality drives the route more than the employer's location. A UK-based company posting a German national follows a different logic from the same company posting a British national.

What the employer carries

Posting does not move responsibility to the employee. The sending employer remains accountable for several areas.

Pay and working conditions

Swiss rules on pay and working conditions can apply to work done in Switzerland, even when the contract is foreign. Collective agreements in some sectors set minimum terms. The applicable terms depend on the sector, the region and the task. The cantonal control bodies and the sector's joint commission are the reference points.

For the policy owner, the practical point is simple: compare the foreign package with the Swiss terms for the same work, before assignment, not after a control visit. Allowances for housing and travel need a clear written basis.

Notification and permits

Where a prior notification applies, it is filed by the employer before work begins. Where a permit applies, it is requested through the competent authority. Both routes depend on facts the employer must be able to document: who, what, where, for which client, and for how long.

The authorities decide. Neither the employer nor an adviser can promise an outcome. Build the project calendar so that a slower decision does not stop delivery. The relocation calendar helps with sequencing.

Social security and insurance

Social security coverage during a posting follows its own coordination rules, which differ by country of origin. Some countries have agreements with Switzerland; others do not. This affects cost and paperwork, so check it early. Accident cover for the work done in Switzerland should be confirmed with the insurer and the cantonal authority.

If the assignment becomes residence in Switzerland, a separate rule applies: basic health insurance is compulsory within three months of taking up residence. If the deadline is met, cover is retroactive to the date of residence and premiums are due from then. If it is missed, cover starts on affiliation, a premium surcharge can apply for an unexcused delay, and the cantonal authority may assign an insurer (Federal Office of Public Health, FOPH). Read the guide to health insurance for expatriate staff before an assignment is converted to residence.

Registration on arrival

A posted worker who does not take up residence is not treated like a resident. A transferee who does establish a home is expected to register with the municipality within 14 days of arrival, presenting identity document, residence or work permit, and proof of health insurance (ch.ch). The exact practice varies by municipality and canton.

Documents to assemble before the start

A complete file shortens any control and any enquiry from the client. Collect these items in one folder, one version, one owner:

the employment contract and any amendment for the Swiss task;
a description of the Swiss assignment, with place, client and planned end;
proof of the employee's nationality and identity;
pay slips and a statement of how pay is calculated for the Swiss days;
proof of social security coverage in the home country;
proof of accident and health cover for the Swiss period;
the service contract or purchase order with the Swiss client;
details of the person on site who answers authority questions.

Keep the file in a language the authorities can read, or with a translation. A missing document is the usual cause of delay.

Records that stand up to a check

Cantonal bodies can check posted work on site. The employer is expected to produce records quickly. Hours, pay and the place of work are the usual subjects.

Good practice for the HR team:

keep a time record that shows days worked in Switzerland;
keep pay calculations that match the contract and the applicable terms;
name a contact who can respond during the assignment;
store documents so that a site supervisor can access them without calling abroad.

The immigration compliance guide for employers sets out audit readiness in more detail.

Common mistakes

treating a long project as a series of short trips to avoid a permit;
starting before notification or permit is confirmed by the authority;
forgetting that subcontractors and agency staff raise their own questions;
leaving the Swiss client without a clear contact for compliance matters;
assuming one sector's rules apply to all teams in the project.

Each of these is avoidable with an early classification and a single owner for the file.

Cost and policy design

A posting has a different cost shape from a relocation. There is usually no household move, no school search and less housing work, but there may be travel, temporary accommodation and compliance effort. Set the policy before the first request arrives so that managers do not negotiate case by case. The relocation policy design guide and the overview of employee relocation costs show how to structure it.

When a posting becomes a relocation

Projects extend. When the Swiss task becomes open-ended, or the employee moves the family, the case leaves posting territory. The sending employer should reopen the classification, check the permit position and review pay, tax and insurance with a specialist. Return and exit planning also matters: see departure and repatriation.

If your team handles both postings and relocations, the guide to relocating staff to Switzerland shows how the two tracks fit together.

Getting help

The site connects employers with relocation companies in Switzerland and, depending on the request, puts you in touch with the one that fits the need. A specialist reviews the case; the site does not decide on permits or give personal advice. Use the request at the bottom of the page to describe the assignment.

Frequently asked questions

What is a posted worker in Switzerland?

A posted worker is employed by a company abroad and sent to work in Switzerland for a limited task. The foreign contract continues. The Swiss work is usually linked to a service for a client.

Is a posted worker the same as a business traveller?

No. A business traveller attends meetings or short visits. A posted worker delivers work or a service. Authorities look at the activity, not at the label the employer uses.

Is a posted worker the same as an assignee?

Usually not. An assignee relocates and typically takes up residence. A posted worker stays tied to the foreign base. The comparison of business travellers and assignees explains the difference.

Does nationality change the procedure?

Yes. EU/EFTA nationals and third-country nationals follow two different regimes (SEM). The route, the conditions and the timing differ.

Who is responsible for compliance?

The sending employer. The Swiss client may also face questions, but the foreign employer carries the main duty for contract, pay and notification.

Can the employee start before the authority replies?

Where a notification or permit applies, work should wait for the confirmation set by the authority. Starting early can lead to sanctions, so the project plan should include the waiting time.

Do Swiss pay rules apply to a foreign contract?

They can apply to work done in Switzerland, especially where a collective agreement covers the sector. The exact terms depend on the sector and the task.

Do allowances count towards pay?

That depends on how the allowance is defined and documented. Travel and housing allowances need a clear written basis. A specialist can review the wording.

Who checks posted work?

Cantonal control bodies and sector joint commissions can check work on site. They may ask for contracts, pay records and time records.

What records does the employer keep?

Contract, pay calculation, time record, proof of social security cover, proof of insurance, and the client contract. Keep them together and current.

Does the employee register with the municipality?

A person who takes up residence registers within 14 days of arrival (ch.ch). A posted worker who stays abroad for residence is in a different position. The municipality or canton can confirm.

Is Swiss health insurance compulsory for a posted worker?

Basic health insurance is compulsory for persons resident in Switzerland within three months of taking up residence (FOPH). A posted worker who keeps a home abroad follows coordination rules. The case needs a specialist review.

What happens if the insurance deadline is missed?

Cover then starts on affiliation, a premium surcharge can apply for an unexcused delay, and the cantonal authority may assign an insurer (FOPH).

Does social security stay in the home country?

Often yes during a posting, but it depends on the country and on any agreement with Switzerland. Confirm early, since certificates take time.

Can a posting be extended?

Extension depends on the rules that apply to the route and on the authority's decision. Ask before the planned end, not after it.

Can family members come with a posted worker?

Family movement follows residence rules, not posting rules. If the family relocates, the case is closer to a relocation. See the family reunification page.

What if the Swiss client changes the project scope?

A change of task, place or duration can change the classification. Review the file and, where needed, update the notification or permit.

Can a subcontractor be posted?

It can, but subcontracting adds questions about who is responsible for what. Document the chain from client to final employer.

How early should HR start?

As soon as the project is likely. Admission for third-country nationals can take time, and even a simple notification needs a complete file.

Who can help with the file?

Relocation companies in Switzerland can support immigration, housing and settling-in. The immigration support service describes how the introduction works.

Posted workers in Switzerland: wages, notification and employer duties