Posted-worker immigration and EU social-security compliance: A1 portable document certificates, Certificates of Coverage, totalisation analysis and host-country notifications for inbound and outbound EU assignments.
Trusted by global teams & growing companies across the EU
From a Romanian engineer working three months in Berlin to a Brazilian specialist on a 12-month posting in Belgrade, we keep social-security contributions in the right country and your filings audit-proof. Whether you're sending talent out of the European Union or bringing them in, our specialists handle the full lifecycle on both sides of the border.
Why Nestlers
We take ownership
Filings, audits and edge cases handled end-to-end — never pushed back to your HR or legal team.
Local expertise, everywhere
Direct entities in Romania, Moldova, Serbia, Bulgaria, Brazil and Colombia, plus 60+ partner countries.
One partner, every service
Immigration, EOR, payroll, tax and relocation — add capabilities without switching providers.
Specialists on demand
Dedicated advisors for complex postings, audits and exceptions — typically responding within hours.
Scale without friction
From a single A1 to a 500-person rollout — our process flexes with your footprint.
Audit-ready since 2007
Nearly two decades of practice. Every filing, contract and payslip designed to survive a labour-inspector visit.
We file for CoC with competent public authorities bodies as per bilateral social-security treaties. From single business trips to long-term postings — automated, error-free, audit-ready.
Before the contract is signed, we map your assignment against EU regulation 883/2004 and other bilateral treaties to confirm the correct jurisdiction — and surface every cost in advance.
Notifications in the host country, liaison with labour inspectorates, minimum-wage and working-time mapping, and ongoing support for the full duration of every posting.
How it works
01
Review the assignment, contracts, prior coverage and route mapping.
02
Prepare and submit A1s/CoCs with full supporting evidence in 48h.
03
Host-country notifications and minimum-condition mapping.
04
Renewals, extensions and host-state interactions for the life of the posting.
Where we deliver from
We employ, file and advise directly from our own entities in Romania, Moldova, Serbia, Bulgaria, Brazil and Colombia — and partner with vetted specialists in 60+ more countries to support your inbound and outbound EU mobility.
Bucharest, Romania
Headquarters
Chișinău, Moldova
Eastern hub
Belgrade, Serbia
Western Balkans hub
Sofia, Bulgaria
EU South-East hub
São Paulo, Brazil
LATAM hub
Bogotá, Colombia
Andean LATAM hub
Lisbon, Portugal
EU West hub
Frankfurt, Germany
EU Central hub
FAQ
Yes — our São Paulo and Belgrade offices issue Certificates of Coverage for outbound assignments to the EU, the UK, the US and Canada.
Standard turnaround is 48 hours for compliant cases. We support same-day urgency for last-minute travel.
Absolutely. We file workation A1s and provide a multi-country compliance map per employee.
Let's start your move
Speak with a Nestlers mobility advisor. We'll map the right path for your business or family — typically within 24 hours.
