In brief: Posting drivers within the EU follows the Mobility Package — different from the general posting rules. For cabotage and combined transport, the host country’s minimum pay applies, an IMI declaration must be filed, and social security stays in Bulgaria under an A1 form. Missing either brings fines and double contributions.

Transport and logistics companies running international journeys face one of the hardest areas of employment and social security law — posting drivers to another EU Member State. The rules here differ substantially from the ordinary posting of office staff.

The special regime for road transport

Since the adoption of the EU Mobility Package I, posting drivers in international road transport follows its own rules, distinct from the general Posting of Workers Directive. International journeys (transit and bilateral operations) are as a rule not treated as posting, whereas certain cabotage operations and combined transport can fall within the posting regime, with all the obligations that follow.

The obligation to pay the host country’s minimum

Where the journey falls within the posting regime, the driver is entitled to the minimum working conditions of the country in which it takes place — including the minimum wage there, not just the Bulgarian one. The employer must track and apply the relevant rate, which requires precise records of routes and days spent in each country.

Declaring through the IMI system

  • Before the posting, the operator files a declaration through the European information exchange system (the IMI portal), with details of the driver, the vehicle and the planned period.
  • The declaration must be current and available for inspection by the host country’s enforcement authorities at any point during the journey.
  • A missing or defective declaration is among the most common grounds for fines at roadside checks in Western Europe.

Social security

Contributions for a posted driver as a rule stay in Bulgaria, provided the posting is temporary (normally up to 24 months) and is evidenced by an A1 form, issued by the social security institute. Without a valid A1 at a check abroad, the employer risks paying contributions twice — in Bulgaria and in the country carrying out the check.

A practical tip: keep a central register of every A1 by driver and period, with a clear renewal process before expiry — the authorities in Germany, France and Austria look for this document first at roadside checks.

Conclusion

Posting in the transport sector combines three separate regulatory regimes — employment law, social security law and the specific Mobility Package rules. A mistake in any one can produce fines many times the cost of administering it properly from the start.

How to reduce the risk of fines

  • Put in place a system for tracking routes and days by country — it is the foundation for applying the right minimum wage.
  • Automate the IMI declarations and keep them accessible in the cab, electronically, for checks.
  • Track the expiry of the A1 forms and renew them in advance.
  • Train your drivers on which documents to produce at a roadside check abroad.

An international haulage company?

Fin Logic administers driver postings — IMI declarations, A1 forms and tracking the minimum rates by country.

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Frequently asked questions

Is every international journey a posting?

No. Transit and bilateral operations as a rule are not; cabotage and combined transport may fall within the posting regime.

What is an A1 form?

A document from the social security institute certifying that the posted worker’s contributions remain in Bulgaria — it prevents double contributions.

What is the IMI declaration?

A declaration filed through the European IMI system before the posting, available for inspection by the host country’s authorities.

Which pay applies on a posting?

The minimum working conditions — including the minimum wage — of the country in which the journey takes place.

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