Arbejdstilsynet Inspection on a Danish Site: 2026 Guide
An Arbejdstilsynet inspection on a Danish construction site can arrive without any advance warning. For a Polish crew in the middle of a busy workday, the sudden appearance of an inspector with a clipboard and a camera can feel unsettling, but it does not have to be. Understanding exactly how the inspection process works, which documents the inspector will ask for, and what rights workers and employers have under Danish law transforms a stressful encounter into a routine administrative procedure.
What Is Arbejdstilsynet and Why Does It Target Construction?
Arbejdstilsynet is the Danish Working Environment Authority, the government body responsible for enforcing the Arbejdsmiljøloven (the Danish Working Environment Act). Its mandate covers every workplace in Denmark, but the construction sector receives particularly close attention because it consistently records a high share of serious occupational accidents. Inspectors have the legal right to enter any site at any time during working hours, examine equipment, review documentation, and speak directly with workers, including through an interpreter if necessary.
For Polish subcontractors and staffing agencies, this is not merely a Danish matter. Danish and EU rules interact directly with obligations under Polish law and the social security framework administered by ZUS. An inspector who finds workers without valid A1 certificates, for example, can trigger a chain of consequences that reaches back to Warsaw.
Step 1: Understanding Who the Inspection Targets
Before the inspector even walks through the site gate, it helps to know who bears legal responsibility. Under Danish rules, the main contractor carries overall responsibility for the working environment on the entire site. However, subcontractors and staffing agencies are independently responsible for their own workers. This means a Polish agency sending ten carpenters to a Copenhagen housing project is fully accountable for those workers' safety, working hours, and documentation, regardless of what the main contractor does or does not do.
If your agency operates under a service contract rather than a direct employment model, you should also review the conditions of that agreement carefully. Some clauses can inadvertently shift liability in unexpected ways, which is why understanding the terms before signing is essential. For a detailed look at problematic contract language, see our article on Contract with a Danish Construction Firm: 7 Clauses a Polish Agency Should Never Sign in 2026.
Step 2: Documents the Inspector Will Ask to See
When an Arbejdstilsynet inspector arrives on site, the first practical step is document verification. The inspector will typically request a set of records that must be available immediately, either in paper form or on a secure digital device. The core documents include:
- Valid A1 certificates for every posted worker, confirming continued affiliation with the Polish social security system under ZUS
- Employment contracts or posting agreements in a language the worker understands
- Working time records covering the current and recent pay periods
- Safety training certificates (Danish: arbejdsmiljøuddannelse) for the site safety representative
- Risk assessments (APV, Arbejdspladsvurdering) relevant to the tasks being performed
- Registration with the Danish Business Authority (RUT register) for posted workers
The RUT register is a particularly common point of failure for Polish agencies new to the Danish market. Any company posting workers to Denmark must register the posting before work begins. Failing to do so is itself a violation, separate from any safety issues found on site.
Working time documentation deserves special attention. Danish law requires employers to keep detailed records of hours worked, and inspectors cross-reference these against the EU Working Time Directive limits. If your record-keeping system is not already set up to meet the five-year retention requirement, the article on 5-Year Working Time Records in Denmark: What to Archive in 2026 provides a practical framework for getting it right.
Step 3: The Inspection Walkthrough
After reviewing documents, the inspector will conduct a physical walkthrough of the work area. On a construction site this typically means checking fall protection at height, the condition of scaffolding, whether workers are wearing appropriate personal protective equipment, and whether machinery has current inspection certificates. The inspector may photograph hazards and will note any deviations in a digital report generated on the spot.
Inspectors are trained to speak with workers directly and confidentially. A worker has the right to speak with the inspector without the foreman or agency representative present. This is an important protection that Polish workers should be aware of: speaking honestly with an inspector is not disloyalty to an employer, it is a legal right.
Step 4: The Outcome and What Follows
At the end of the visit, the inspector produces a written report. Depending on what was found, the outcome falls into one of several categories. A clean inspection results in a simple confirmation. Minor deficiencies generate an påbud, a binding order to correct the problem within a set deadline. Serious or imminent dangers can result in a stop order, halting work on part or all of the site until the hazard is resolved. In the most serious cases, the matter is referred to the police for prosecution.
Fines for working environment violations in Denmark can reach tens of thousands of DKK, and repeated or serious breaches carry significantly higher penalties. For posted workers, violations can also affect the agency's standing with Danish clients and, in some circumstances, trigger reviews by the Polish Labour Inspectorate, PIP.
Step 5: A1 Certificates and the Social Security Dimension
One of the most consequential things an Arbejdstilsynet inspector can uncover is workers operating without valid A1 certificates. The A1 form, issued by ZUS in Poland, confirms that a posted worker continues to pay social contributions in Poland rather than Denmark. Without it, Danish authorities may claim that contributions are owed to the Danish system, creating a significant retroactive liability.
A1 certificates must be obtained before the posting begins, not after the inspector asks for them. They are tied to specific workers and specific postings, so rotating workers in and out of a project without updating the certificates is a frequent and costly mistake. For a full explanation of how rotations affect A1 validity, the article on Certificate A1 and Worker Rotations: Denmark-Poland 2026 covers the rules in detail.
Common Mistakes Polish Crews Make Before and During an Inspection
Experience on Danish sites reveals a handful of recurring problems. Workers are sometimes given safety induction training in Polish but the certificate is issued in a format that does not satisfy Danish requirements. Risk assessments are prepared once at the start of a project and never updated as conditions change. Working time records are kept informally in a spreadsheet that cannot be produced quickly under inspection conditions. And A1 certificates, while technically obtained, are left back at the agency office rather than kept on site or accessible digitally.
A hypothetical but realistic scenario: imagine a Polish agency with a crew of eight workers on a renovation project in a Danish city. The inspector arrives, the site foreman cannot immediately produce working time records for the previous month, and two workers are missing A1 documentation. Even if no physical safety violations are found, the agency faces two separate påbud and a potential fine. The correction process alone, involving correspondence with Arbejdstilsynet, ZUS, and possibly the Danish Business Authority, can take weeks and distract management from ongoing projects.
Actionable Advice for Polish Agencies and Crew Leaders
The most effective preparation is systematic rather than reactive. Before any crew starts work on a Danish site, confirm that every worker has a current A1 certificate and that the posting is registered in the RUT system. Establish a digital document folder accessible from a phone or tablet that contains contracts, A1 certificates, safety training records, and the current APV. Train foremen to understand that cooperating calmly and professionally with an Arbejdstilsynet inspector is both a legal obligation and the fastest route to a clean outcome.
Review your working time recording system now, before an inspector asks to see it. Keep records in a format that can be exported and printed immediately, covering at least the last twelve months. And if your agency has not yet conducted an internal audit against the requirements of the Arbejdsmiljøloven, the official guidance published by Arbejdstilsynet at at.dk is the authoritative starting point. Compliance is not a one-time task, it is an ongoing process, and the agencies that treat it that way are the ones that build lasting reputations on the Danish market.