Work legally in Germany, Austria and the Netherlands. We handle the compliance.
K&K Connex is the compliance and coordination partner for companies from Romania, Croatia, Slovenia and across Eastern Europe expanding into the German, Austrian and Dutch markets — covering SOKA-BAU, BUAK, ZKO3 and the full documentation trail regulators expect.
A compliance partner, not a paperwork problem
Expanding into a new country brings a long list of registrations, certificates and authorities. We turn that list into a managed process.
Cross-border compliance expertise
We know exactly which certificates, registrations and notifications apply to your project in Germany, Austria and the Netherlands — and keep pace as requirements change.
End-to-end documentation & coordination
From SOKA-BAU registration to ZKO3 notifications, we prepare, track and organize every document your project needs — and liaise with authorities on your behalf.
Support for the full project lifecycle
Compliance isn't a one-off filing. We stay engaged for the duration of your project, monitoring deadlines and keeping your documentation audit-ready.
Everything foreign companies need to work compliantly abroad
Our core service is coordinating the full compliance process for posted workers and cross-border operations — organized, documented and ready for inspection.
Cross-Border Compliance
A structured overview of which rules apply to your project before work begins, so nothing is missed once your team is on site.
Employee Posting Compliance
Guidance on posted-worker notification requirements for Germany, Austria and the Netherlands, so your team knows exactly what to submit — and when — before deployment.
SOKA-BAU & BUAK Coordination
Registration and ongoing coordination with Germany's SOKA-BAU and Austria's BUAK construction social funds.
ZKO3 & Registration Support
Notification and registration support for the Austrian ZKO3 framework and related market-entry filings.
Document Management
A single, organized record of every certificate, contract and notification tied to your project — ready whenever an authority asks.
Payroll & Advisor Coordination
We coordinate wage documentation between your payroll office and our network of qualified tax advisors and lawyers on matters requiring their expertise.
Local requirements, one point of contact
Each market has its own registrations and authorities. We track all three, so you don't have to.
Germany
DEPosting workers to Germany means navigating minimum-wage documentation, SOKA-BAU and reporting obligations before work starts.
- Posting notifications & minimum-wage documentation guidance
- SOKA-BAU registration coordination
- Working-time & wage documentation support
Austria
ATAustria requires posting notifications (ZKO3) and BUAK registration for construction assignments before deployment.
- ZKO3 notification & registration guidance
- BUAK registration coordination
- AVRAG documentation support
Netherlands
NLDutch assignments require WagwEU notifications and registration in the national posted-worker register before work begins.
- WagwEU notification & registration guidance
- Posted-worker register coordination
- Client & agency documentation support
A managed compliance process, start to finish
Every engagement follows the same structured path, so you always know what's happening and what's next.
Assessment
We review your project, workforce and target country to map every applicable requirement.
Documentation
SOKA-BAU, BUAK, ZKO3 and WagwEU registrations and notifications are prepared and coordinated ahead of deployment.
Coordination
We liaise with authorities, payroll partners and tax advisors so nothing falls through the cracks.
Ongoing Compliance
We monitor deadlines and keep your documentation audit-ready for the full project duration.
Beyond compliance: project & subcontractor placement
Our clients come to us for compliance — and many stay for our regional network. Once your compliance foundation is in place, we can also help connect you with construction projects and subcontractor opportunities across Germany, Austria and the Netherlands. It's an extension of the relationship, not our starting point.
Project Placement
Introductions to construction projects that match your team's capacity and compliance status.
Subcontractor Sourcing
Access to a vetted network of subcontractors already familiar with cross-border compliance requirements.
Trusted by companies expanding across borders
A selection of clients we've supported with compliant market entry and ongoing coordination in Germany, Austria and the Netherlands.
"For plant maintenance projects with tight shutdown windows, having compliance handled in advance is non-negotiable. K&K Connex delivers that reliably."
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"Clear steps, realistic timelines, and someone who actually answers the phone. Exactly what we needed entering a new market."
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"K&K Connex made the Dutch posted-worker requirements easy to navigate for our electrical teams working abroad."
Visit website ↗"K&K Connex reviewed, sorted and submitted all our subcontractor documentation — giving us full legal certainty before deployment."
RMS Schweisstechnik GmbH"Our installation teams were fully registered and audit-ready before the first bolt was tightened on site."
Profi Metal Mont d.o.o."Straightforward guidance and fast responses — exactly what a growing business needs when expanding abroad."
Green Kos d.o.o."K&K Connex got our posted-worker documentation sorted before our crews even crossed the border. No delays, no surprises on site."
Costy-Conect Construct s.r.l."One point of contact for every compliance question instead of five different offices. That alone saved us weeks."
Borbau s.r.l."As a staffing partner ourselves, we value precision. K&K Connex delivers exactly that on every cross-border placement."
Integrato Group"Every registration, every notification, always on time. It's made expanding our service business across borders genuinely simple."
m-tech Service d.o.o."Fast, reliable and always transparent about what's needed next. A compliance partner we can count on."
bkyln Dynamik s.r.l.Compliance, explained clearly
Is K&K Connex a law firm or tax consultancy?+
No. K&K Connex is a compliance and coordination partner. We organize documentation and processes, and work together with qualified tax advisors and lawyers whenever a matter requires legal or tax advice.
Do you apply for A1 certificates on our behalf?+
No. The A1 certificate is applied for by the employer directly with their home country's social security authority — that responsibility stays with you. We focus on SOKA-BAU, BUAK, ZKO3, WagwEU and the surrounding documentation and coordination that sits around it.
Do you register companies directly with SOKA-BAU, BUAK or ZKO3?+
We coordinate and prepare the registration and notification process on your behalf, working directly with the relevant authorities and, where required, with your tax advisor.
Which countries do you cover?+
Our core coverage is Germany, Austria and the Netherlands, supporting companies based in Romania, Croatia, Slovenia and elsewhere in Eastern Europe.
Can you also help us find projects or subcontractors?+
Yes — as an additional service once your compliance setup is in place, we can introduce you to relevant projects and vetted subcontractors in our network.
Built for companies expanding across borders
K&K Connex j.d.o.o. was founded to give companies from Romania, Croatia, Slovenia and across Eastern Europe a single, reliable partner for working compliantly in Germany, Austria and the Netherlands. Instead of navigating SOKA-BAU, BUAK and ZKO3 requirements alone, our clients get one coordinated process — and, where needed, a network of qualified tax advisors and lawyers alongside us.
Precision
Every certificate and notification is prepared to the standard authorities expect.
Transparency
Clear scope and status updates — no black boxes in your compliance process.
Partnership
A dedicated point of contact working alongside your team and advisors.
Reliability
Deadlines tracked and documentation kept audit-ready for the full project.
Ready to expand compliantly into Germany, Austria or the Netherlands?
Tell us about your project — we'll respond within 48 hours with a clear compliance roadmap.
Let's map your compliance requirements
Fill in the form or reach out directly — we'll come back to you with next steps for your target market.
K&K Connex j.d.o.o.
Lastovska Ulica 2A
10000 Zagreb, Croatia
Mon–Fri, 10:00–16:00 (CET)