Vikarbureau w Danii: Licencje i Umowy 2026 Guide

Running a vikarbureau w Danii, a temporary work agency placing Polish workers on Danish job sites, is a serious business undertaking that sits at the intersection of two legal systems and one large body of EU labour law. Before a single worker boards a bus to Copenhagen, the agency behind that placement must hold the right licences, sign the right contracts, and register with the right authorities on both sides of the Baltic. Getting any of these steps wrong does not just expose the agency to fines; it can leave workers without social insurance, without proper pay, and without any legal recourse when things go wrong. This guide walks through every major requirement in plain terms.

Step 1: Check Eligibility Before You Start

The starting point is Poland. Any company that wants to operate as a temporary work agency, even one whose workers will be posted exclusively abroad, must hold a valid entry in the Krajowy Rejestr Agencji Zatrudnienia (KRAZ), the national register of employment agencies maintained under Polish law and overseen by the Państwowa Inspekcja Pracy (PIP). Without a KRAZ certificate, the agency is operating illegally under the Ustawa o promocji zatrudnienia i instytucjach rynku pracy (the Act on Employment Promotion and Labour Market Institutions), and PIP inspectors can and do check this during cross-border posting investigations. You can verify current registration requirements directly on the PIP website at pip.gov.pl.

At the same time, the agency must assess whether its workers will be genuinely posted to Denmark under EU posting rules or whether they will be employed locally under Danish contracts. The distinction matters enormously for social security contributions. Genuinely posted workers can remain in the Polish ZUS system for up to 24 months, provided the agency obtains an A1 certificate for each individual through ZUS. Workers who do not qualify for the A1 certificate must be registered with the Danish social security and tax system instead.

Step 2: Gather the Required Documents

Once eligibility is confirmed, the agency must assemble a substantial set of documents before approaching Danish authorities. On the Polish side, this means the KRAZ certificate, the company's KRS extract (or CEIDG entry for sole traders), proof of ZUS registration, and, for each posted worker, a valid A1 certificate and a written posting agreement that meets the requirements of the Polish Kodeks Pracy and the EU Posted Workers Directive (Directive 96/71/EC as amended by Directive 2018/957/EU).

On the Danish side, the agency must register with the Register of Foreign Service Providers (RUT), administered by Arbejdstilsynet, the Danish Working Environment Authority. RUT registration must happen before work begins, not after. Arbejdstilsynet uses RUT data to plan inspections and to verify that workers on Danish sites are covered by the correct rules. Failure to register is one of the most common, and most avoidable, mistakes agencies make. Details on the RUT obligation are available at at.dk.

The agency must also obtain a Danish CVR number if it intends to invoice Danish client companies directly, and it must ensure that all workers who will be taxed in Denmark have a valid skattekort (tax card) from SKAT. Workers without a tax card are automatically taxed at the high withholding rate, which causes immediate financial hardship. For a full breakdown of how the tax card system works, see our related article on the SKAT Tax Card for Polish Workers in Denmark: 2026 Guide.

Step 3: Draft Compliant Employment Contracts

Danish labour law does not require a single standardised contract template, but the content of every employment agreement must comply with the rules set out in the Danish Ansættelsesbevisloven (the Employment Contracts Act, which implements EU Directive 2019/1152 on transparent and predictable working conditions). Every worker must receive written confirmation of their terms before or on their first day of work. The document must state the employer's name and address, the place of work, the job title or description, the start date, the expected duration if the contract is temporary, the agreed pay and payment intervals, and the normal working hours.

For agencies operating in the construction sector, the contract must also reflect any applicable collective agreement (overenskomst). Denmark has no statutory minimum wage set by law, but sectoral collective agreements effectively set the floor. An agency that undercuts the overenskomst rate risks being blacklisted by Danish trade unions and client companies alike, and may face claims brought through the industrial arbitration system. Issues around working hours are equally serious: the EU Working Time Directive and its Danish implementation cap average weekly hours, and construction workers in Denmark are already at elevated risk of overwork, as discussed in our piece on Overwork Among Polish Construction Workers in Denmark 2026.

Step 4: Submit Registrations and Notifications

With documents in order, the agency submits registrations in parallel rather than sequentially, because Danish law requires RUT notification before work starts and there is no grace period. The RUT notification is submitted electronically through the Virk.dk portal. At the same time, any workers who will be taxed in Denmark must apply for their skattekort through SKAT's online system. A1 certificates, if not already issued, should be requested from ZUS well in advance, because processing times can stretch to several weeks during busy periods.

Consider a hypothetical scenario: an agency employing thirty construction workers on a six-month project in Jutland. If even a handful of those workers arrive without A1 certificates and without tax cards, the agency faces simultaneous exposure to Danish tax penalties, potential RUT violations, and ZUS back-contributions in Poland. The administrative burden of correcting all three in parallel, while workers are already on site, is enormous and entirely avoidable.

Step 5: Maintain Compliance Throughout the Assignment

Registration is not a one-time event. The agency must update its RUT entry whenever the scope of work changes significantly, for example, if additional workers join the project or if the work location changes. Arbejdstilsynet inspectors visit construction sites regularly and cross-reference the workers they find with the RUT database. Discrepancies trigger formal investigations.

Polish agencies must also ensure that workers can actually exercise their rights if a dispute arises. A worker who is dismissed without proper notice on a Danish site has rights under both Danish employment law and the terms of any applicable overenskomst. Understanding how Danish dismissal rules work is essential; our article on Dismissal for Cause on Danish Construction Sites 2026 covers the key obligations in detail.

Common Mistakes to Avoid

The most frequent errors agencies make fall into predictable patterns. Skipping or delaying RUT registration is the single most common compliance failure. Treating genuinely local employees as posted workers to avoid Danish social contributions is a serious legal risk that both ZUS and Danish authorities actively investigate. Using contract templates that omit mandatory information under Ansættelsesbevisloven exposes the agency to claims from workers and sanctions from Arbejdstilsynet. And failing to keep copies of A1 certificates on site, or accessible digitally, means inspectors cannot verify posting status on the spot.

The practical advice is straightforward: build a compliance checklist before the first worker departs, assign one person in the agency as the responsible contact for both Polish and Danish authorities, and review the checklist every time a new project starts. Polish law, Danish law, and EU posting rules each have their own logic, but they are not incompatible. An agency that understands all three can operate a vikarbureau w Danii professionally, legally, and sustainably.