EU–Switzerland Business Impact — Article 3
For many companies operating between Switzerland and the EU, posting of workers and cross-border service provision is where legal theory meets operational reality. It is also where long-standing practices, often built on pragmatism and risk tolerance, may come under increasing scrutiny as the Switzerland–EU framework discussions progress.
The key question for businesses is not whether posting will still be possible — it will — but whether the room for interpretation and informal arrangements is narrowing.
1. Posting of workers: a familiar concept, a changing context
Posting of workers is not new. Companies have long relied on it to:
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deliver services across borders,
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deploy specialised staff temporarily,
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respond flexibly to project-based needs.
What is changing is the regulatory environment surrounding posting, particularly through:
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revised EU rules on posting of workers,
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stronger emphasis on equal remuneration (new concept for Switzerland which is used to “customary salaries” for place and trade),
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closer coordination between labour, immigration and enforcement authorities.
For businesses, this means the same tools, but stricter expectations.
2. Equal remuneration: more than a wage issue
One of the most significant developments is the reinforced principle of equal remuneration with local workers.
This goes beyond minimum wage compliance and raises practical questions around:
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salary components,
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bonuses and allowances,
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treatment of posting-related payments.
In practice, companies can no longer assume that:
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allowances automatically count as remuneration,
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lump-sum payments are risk-free,
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internal cost structures will go unquestioned.
The distinction between remuneration and reimbursement of expenses becomes a critical compliance issue.
3. Allowances and expenses: where many risks concentrate
Posting-related allowances have traditionally served multiple purposes:
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bridging wage gaps,
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compensating for mobility,
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covering additional costs.
Under revised posting rules, however:
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allowances are presumed to be part of remuneration,
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unless clearly identified and justified as reimbursement of actual expenses,
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with documentation playing a central role.
For companies, this creates exposure where:
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contractual language is vague,
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expense policies are inconsistent,
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practices differ between projects or jurisdictions.
What once seemed administratively efficient may now be legally fragile.
4. Enforcement and controls: less fragmented, more coordinated
Another important shift concerns enforcement.
The trend points towards:
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more targeted, risk-based controls,
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better coordination between authorities,
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higher expectations regarding documentation and traceability.
This does not necessarily mean constant inspections, but it does mean that:
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gaps in documentation matter more,
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explanations must be defensible,
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historic tolerance cannot be relied upon indefinitely.
For companies, preparation matters more than reaction.
5. Business implications: where companies should focus now
Companies relying on posting arrangements should already be asking:
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Are posting structures clearly distinguishable from employment?
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Are remuneration components transparent and defensible?
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Are expense reimbursements properly documented?
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Do internal policies reflect actual practices on the ground?
Posting of workers increasingly sits at the intersection of: HR, legal, payroll, tax and project management.
Treating it as a purely administrative issue is no longer sufficient.
Conclusion
Posting of workers under the Switzerland–EU framework is not about restricting cross-border services. It is about tightening the rules of the game.
For businesses, the challenge is not compliance per se, it is adapting from informal flexibility to structured defensibility.
The grey zones may not disappear overnight, but they are becoming narrower, more visible, and harder to justify.
In the next article of the series, we will turn to another closely related pressure point for companies: wage protection, compliance risks and the open questions still surrounding national safeguards.
Article by Ara Samuelian
Does your organisation have plans of future hires or international transfers ? Are you wondering if you will have to change mobility and immigration policies based on the above?
Samuelian Immigration Law (SIL) can support you in assessing the potential impact and adjusting your workforce and mobility strategy.
Get in touch and Contact SIL for guidance or case-specific advice.
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