Construction accounts for approximately 43% of all posted worker declarations in the European Union — making it the most regulated sector under the Posted Workers Directive. If your company sends workers to build across borders, this guide will tell you exactly what documents you need, how to register in each country, and how much the fines are if you get it wrong.
The Legal Framework: Which Directive Applies?
The Posted Workers Directive 96/71/EC, as revised by Directive 2018/957/EU (effective August 2020), governs the temporary cross-border posting of workers within the EU. The 2018 revision made two fundamental changes that hit construction companies the hardest:
- Equal pay principle: Posted workers must now receive the same remuneration as local workers in equivalent roles — not just the minimum wage of the host country. This includes all mandatory pay elements: bonuses, allowances, paid leave.
- 12-month cap on standard posting: After 12 months (extendable to 18 with notification), the full labour law of the host country applies — not just the "core" of the directive.
The enforcement directive (2014/67/EU) adds cross-border cooperation between national labour inspectorates and makes joint liability in subcontracting chains explicit.
Who Is Covered?
Your company is subject to the directive if you:
- Send workers to another EU Member State to deliver a service under a contract
- Send workers to an establishment or undertaking owned by your corporate group in another Member State
- Place workers (as a temp agency) with a user enterprise in another Member State
For construction: if your Portuguese crew travels to Belgium to work on a commercial building, every worker is a posted worker from day one.
Mandatory Documentation
Before departure
- Pre-notification to host country authorities — each country has its own system (see below). Must be completed before work starts, not after arrival.
- A1 Portable Document — issued by the sending country's social security authority. Confirms that the worker remains covered by the social security system of the country of origin. Without this, the worker may be treated as unregistered in the host country. In Portugal, apply at seg-social.pt — processing time: 3–5 business days.
- Employment contract — translated into the language of the host country, or English if accepted. Must reflect the remuneration applicable under host country rules.
Available in the host country
- Identity documents for all posted workers
- Working time records (daily records of start and end times)
- Proof of remuneration compliant with host country minimum wage
- Liaison person contact details (required by France, recommended in all countries)
Pre-Registration Requirements by Country
Belgium — LIMOSA
Platform: limosa.be | Deadline: at least 1 business day before work begins. Belgium has one of the most active enforcement regimes in Europe, with ONSS (national social security) conducting systematic checks on construction sites. Penalty for non-registration: up to €800 per unregistered worker.
Netherlands — meldloket.nl
Platform: meldloket.nl | Deadline: before work begins. The Netherlands implemented the WTTA Act in 2024, requiring temp agencies and foreign subcontractors to obtain a specific certification. Failure to notify: up to €10,000 per company.
France — SIPSI
Platform: sipsi.travail.gouv.fr | Requires: pre-notification + designation of a representative based in France who can present documentation within 48 hours. Maximum penalty: €500,000 for the company and €10,000 for the representative. The French client company can also be held jointly liable if the foreign subcontractor is non-compliant.
Germany — Zoll
Platform: zoll.de | Documentation must be in German or English. Active enforcement by customs authority (Hauptzollamt). Maximum penalty: €500,000. German minimum wage in 2025: €12.82/hour.
Luxembourg — IGSS
Pre-notification required. Penalty: up to €5,000 per worker.
The Most Common Violations — and Their Cost
| Violation | Country | Typical fine |
|---|---|---|
| Worker not registered in pre-notification system | Belgium | €800/worker |
| Missing A1 document | France | €3,000–€10,000/worker |
| No working time records | Netherlands | €1,500–€4,500 |
| Pay below host country minimum | Germany | €500,000 (company) |
| Expired identity document | All | €2,000–€6,000 |
How to Stay Compliant: The Practical Checklist
- Register in the host country pre-notification system before departure
- Obtain A1 documents for every posted worker (apply at least 1 week before departure)
- Verify salaries comply with the host country's applicable minimum (not Portugal's)
- Designate a liaison person in the host country (mandatory in France, best practice elsewhere)
- Implement digital time-tracking — paper records are not accepted as reliable evidence by most authorities
- Set expiry alerts for identity documents and A1 certificates
- Keep all documents accessible on-site within minutes, not hours
Conclusion
The trend across Europe is clear: enforcement is increasing, digital cross-referencing of data is becoming standard, and the days of "we'll sort the paperwork later" are over. Construction companies that build proper documentation systems are not just avoiding fines — they're positioning themselves to win contracts from clients who increasingly require compliance certification as a condition of award.
Yey was built specifically for this challenge — centralised worker documentation, automatic expiry alerts, QR-code attendance, and a compliance report you can show any inspector in under 2 minutes. 14-day free trial, no credit card required.