If your company regularly sends employees to work in other EU member states, you are already operating in one of the more demanding areas of European employment law. The administrative obligations are real, the deadlines are strict, and without the right documentation in place, your employees may be subject to social security contributions in two countries at the same time. One document sits at the center of this entire compliance framework: the A1 certificate.
Find out from Ioana Dobre, Senior Consultancy Manager at BIA HCS, what A1 certificate means for your business and how to get it.
The Role of the A1 Certificate in cross-border employment
Issued under EU Regulation No. 883/2004, the A1 certificate establishes which country’s social security system applies to an employee working across borders. In practical terms, it confirms that your employee is insured in Romania and is therefore not subject to social security obligations in the country where they are temporarily working.
Without it, host-country authorities have every right to treat that employee as locally employed for social security purposes — which means your company may face duplicate contribution demands, retroactive assessments and administrative penalties. In some jurisdictions, liability extends beyond the employer to the client company receiving the posted worker.
Who needs A1 certificate
The A1 certificate covers a range of cross-border work situations:
- Employees posted abroad for temporary assignments, generally up to 24 months
- Professionals who regularly work in two or more EU member states at the same time
- Self-employed individuals carrying out activities across borders
Each of these situations is governed by different eligibility rules. A project engineer on a six-month posting to Austria is assessed differently from a regional manager whose work naturally spans several markets. Misclassifying the arrangement, or submitting an incomplete documentation leads to delays — and potentially to employees working abroad without valid coverage.
Why is the process more demanding than it appears
Securing an A1 certificate is not a matter of filling in a form. It requires a thorough assessment of each employee’s specific situation, a complete and accurate documentation, and timely coordination with the Romanian National House of Public Pensions, the authority responsible for issuing the certificate.
For HR teams already managing payroll, contracts and day-to-day workforce operations, handling multiple simultaneous A1 applications is a significant additional task. Applications must be submitted before the assignment begins. Any inaccuracies — wrong dates, incomplete descriptions of the work arrangement, missing supporting documents — can trigger follow-up requests from the authorities and push the timeline well past the assignment start date.
The cost of non-compliance is not hypothetical
Labour inspectorates across the EU have significantly stepped up enforcement of posted worker rules. On-site checks are increasingly common and employees found working without a valid A1 certificate can be registered immediately under the host country’s social security system — triggering retroactive contribution liabilities for your company, alongside administrative fines and, in some cases, exclusion from public procurement processes.
The risks are entirely avoidable with the right support in place.
How BIA Human Capital Solutions supports your compliance obligations
BIA HCS takes full responsibility for the A1 certification process from start to finish. Our team assesses each employee’s eligibility under the applicable EU framework, prepares the complete documentation and manages all correspondence with the relevant Romanian authorities through to the moment the certificate is issued. We track deadlines proactively and ensure that every employee travelling abroad for work holds a valid A1 certificate before their assignment begins.
Reach out to the BIA HCS team today for expert guidance on A1 certification and cross-border workforce compliance.
👉📩 biaoffice@bia.ro 📞 0727 500 350!
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