Important Updates
Important Updates
December 3, 2025 | OmanOman: Grace Period Announced for Foreign Nationals in Irregular Status
December 3, 2025 | BahrainBahrain: Minimum Real Estate Investment for Golden Residency Visa Reduced
December 3, 2025 | European UnionEuropean Union/Schengen Area: Internal Schengen Border Checks Situation
December 3, 2025 | IrelandIreland: Roadmap for Minimum Annual Remuneration Salary Thresholds Published
December 3, 2025 | 🌐Minimum Salary Changes Announced
December 3, 2025 | OmanOman: Grace Period Announced for Foreign Nationals in Irregular Status
December 3, 2025 | BahrainBahrain: Minimum Real Estate Investment for Golden Residency Visa Reduced
December 3, 2025 | European UnionEuropean Union/Schengen Area: Internal Schengen Border Checks Situation
December 3, 2025 | IrelandIreland: Roadmap for Minimum Annual Remuneration Salary Thresholds Published
December 3, 2025 | 🌐Minimum Salary Changes Announced
December 3, 2025 | OmanOman: Grace Period Announced for Foreign Nationals in Irregular Status
Subscribe
Fragomen.com home
Select Language
  • English
  • French
  • French - Canadian
  • German

Select Language

  • English
  • French
  • French - Canadian
  • German
ContactCareersMediaClient Portal
Search Fragomen.com
  • Our Services
    For EmployersFor IndividualsBy IndustryCase Studies
  • Our Tech & Innovation
  • Our People
  • Our Insights
    Worldwide Immigration Trends ReportsMagellan SeriesImmigration AlertsEventsMedia MentionsFragomen NewsBlogsPodcasts & Videos
  • Spotlights
    Navigating Immigration Under the Second Trump AdministrationFragomen Consulting EuropeImmigration Matters: Your U.S. Compliance RoadmapCenter for Strategy and Applied InsightsVietnamese ImmigrationView More
  • About Us
    About FragomenOfficesResponsible Business PracticesFirm GovernanceRecognition

Our Services

  • For Employers
  • For Individuals
  • By Industry
  • Case Studies

Our Tech & Innovation

  • Our Approach

Our People

  • Overview / Directory

Our Insights

  • Worldwide Immigration Trends Reports
  • Magellan Series
  • Immigration Alerts
  • Events
  • Media Mentions
  • Fragomen News
  • Blogs
  • Podcasts & Videos

Spotlights

  • Navigating Immigration Under the Second Trump Administration
  • Fragomen Consulting Europe
  • Immigration Matters: Your U.S. Compliance Roadmap
  • Center for Strategy and Applied Insights
  • Vietnamese Immigration
  • View More

About Us

  • About Fragomen
  • Offices
  • Responsible Business Practices
  • Firm Governance
  • Recognition
Select Language
  • English
  • French
  • French - Canadian
  • German

Select Language

  • English
  • French
  • French - Canadian
  • German
ContactCareersMediaClient Portal
  • Insights

The Importance of A1 Certificates

May 24, 2024

The Importance of A1 Certificates

Countries / Territories

  • European UnionEuropean Union
  • BelgiumBelgium
  • United KingdomUnited Kingdom

Related contacts

Wim Cocquyt

Wim Cocquyt

Client Engagement Director Europe

Brussels (Benelux), Belgium

Email

[email protected]

T:+32 (0)2 250 4875

Harry Goldstraw - web porthole

Harry Goldstraw

Manager

London, United Kingdom

Email

[email protected]

T:+44 (0)207 090 9299

Related offices

  • Brussels (Benelux)
  • London

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Related contacts

Wim Cocquyt

Wim Cocquyt

Client Engagement Director Europe

Brussels (Benelux), Belgium

Email

[email protected]

T:+32 (0)2 250 4875

Harry Goldstraw - web porthole

Harry Goldstraw

Manager

London, United Kingdom

Email

[email protected]

T:+44 (0)207 090 9299

Related offices

  • Brussels (Benelux)
  • London

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Related contacts

Wim Cocquyt

Wim Cocquyt

Client Engagement Director Europe

Brussels (Benelux), Belgium

Email

[email protected]

T:+32 (0)2 250 4875

Harry Goldstraw - web porthole

Harry Goldstraw

Manager

London, United Kingdom

Email

[email protected]

T:+44 (0)207 090 9299

Related offices

  • Brussels (Benelux)
  • London

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

By: Wim Cocquyt, Harry Goldstraw, Victoria Barber, Marina Ocariz

What is an A1 certificate?

With an increasing number of employees working abroad, either temporarily or permanently, attention needs to be paid not only to immigration requirements but also to compliance regarding social security.

Social security can be broadly defined as the financial contributions from work paid to national schemes that protect social events or interests, i.e., state pensions, health insurance, unemployment benefits, family benefits, etc. Each country has its own scope and conditions and offers benefits of its social security systems.

The general rule for payment of social security is that you ‘pay where you work,’ contributing to the government system of the country in which you are employed. When an employee travels abroad for business or is temporarily posted to another country, the question arises – where and how is social security paid?

The EU has introduced protections for workers to allow them to maintain social security benefits in their home country, as well as ensuring they are only subject to the social security of one member state if temporarily working abroad.

Within the EU, the ‘home’ employing country can issue an A1 certificate to evidence the employee’s social security contributions and exempt them from paying it in the ‘host’ country where the employee is temporarily working. Outside of the EU, a Certificate of Coverage (CoC) may be issued where a (bilateral) social security agreement is in place.

A1 certificates and CoCs are required for a variety of workers including business travellers, employees and the self-employed on assignments or travelling for work. Depending on the agreement, these certificates can be valid for 12-60 months, after which employees may need to transfer to the host social security system.

Why is an A1 certificate important?

If a worker is posted to another member state, their employer can request an A1 certificate from the authorities in the employing country. Although it is possible to obtain A1 certificates retroactively, it is strongly recommended the A1 application is filed before the posting, as social security, immigration and posted worker notification compliance are closely connected.

The A1 certificate acts as proof of where the employee’s social security contributions are paid. For some EU countries, an A1 certificate is required for immigration filings. In Austria, immigration applications outside the EU as well as Van Der Elst permits require an A1 certificate. In Germany, a strict approach is taken by the national authorities (who are known to exchange information) which would even require someone working abroad for a few hours to have an A1 certificate in place.

Even where no immigration permit is required, a posted worker notification (PWN) may still be required for the assignment. A PWN is often required when an employee is temporarily working in an EU country.

There is a strong link between social security and PWN compliance, as most EU countries require an A1 or CoC as part of the mandatory documents to be kept on the employee’s file with their PWN. Some countries, such as Luxembourg, even require the A1/CoC to be submitted during the PWN application, so obtaining the A1 ahead of the assignment is crucial.

Significant financial penalties for failure to comply with this can be imposed. In France, for example, penalties for non-compliance with document retention requirements are up to 4,000 EUR per employee and 8,000 EUR for repeat offences (failure to file another notification within the next two years) up to a total of 500,000 EUR. Additionally, there is joint liability between the home (sending) and host (receiving) companies.

The need for A1 compliance is further highlighted by the increase in information sharing between different national labour, immigration and social security authorities. Although this data exchange is not formally regulated, it occurs always more often and non-compliance in one area can trigger inspections in other areas. We have seen during Spanish PWN inspections that the authorities have specifically asked for evidence of A1 compliance, on a very short-term basis.

The real-life impact of non-compliance can be severe. In some situations, employees may be denied access to the host entity or client worksite without an A1 certificate or PWN. This can have a knock-on effect not only on the employees themselves but also on businesses if they cannot deliver on client contracts or work deadlines.

The future of A1 compliance

The EU is currently working on modernising social security coordination through digitalisation.

This will be implemented at two levels: first, increasing data sharing between national authorities through the Electronic Exchange of Social Security Information (EESSI).

Second, streamlining procedures for citizens and businesses through the European Social Security Pass (ESSPASS) project. This will provide a simplified, digital solution to verify social security entitlements throughout the EU reducing administrative burdens for companies when sending their employees to temporarily work abroad.

How can Fragomen help?

The Fragomen Social Security team, thanks to a strong government strategies approach, is prepared to guide clients to optimise their social security programmes and ensure that A1 certificates are requested in accordance with the requirements of the EU Regulations, and make sure your company is compliant in immigration, posted workers and social security. This strategic approach will help you plan and ensure social security compliance from day one.

Need to know more?

For questions regarding A1/CoC compliance, please contact the Fragomen Social Security team at [email protected].

This blog was published on 24 May 2024, and due to the circumstances, there are frequent changes. To keep up to date with all the latest updates on global immigration, please subscribe to our alerts and follow us on LinkedIn, X, Facebook and Instagram.

Countries / Territories

  • European UnionEuropean Union
  • BelgiumBelgium
  • United KingdomUnited Kingdom

Related contacts

Wim Cocquyt

Wim Cocquyt

Client Engagement Director Europe

Brussels (Benelux), Belgium

Email

[email protected]

T:+32 (0)2 250 4875

Harry Goldstraw - web porthole

Harry Goldstraw

Manager

London, United Kingdom

Email

[email protected]

T:+44 (0)207 090 9299

Related offices

  • Brussels (Benelux)
  • London

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Related contacts

Wim Cocquyt

Wim Cocquyt

Client Engagement Director Europe

Brussels (Benelux), Belgium

Email

[email protected]

T:+32 (0)2 250 4875

Harry Goldstraw - web porthole

Harry Goldstraw

Manager

London, United Kingdom

Email

[email protected]

T:+44 (0)207 090 9299

Related offices

  • Brussels (Benelux)
  • London

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Related contacts

Wim Cocquyt

Wim Cocquyt

Client Engagement Director Europe

Brussels (Benelux), Belgium

Email

[email protected]

T:+32 (0)2 250 4875

Harry Goldstraw - web porthole

Harry Goldstraw

Manager

London, United Kingdom

Email

[email protected]

T:+44 (0)207 090 9299

Related offices

  • Brussels (Benelux)
  • London

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Explore more at Fragomen

Video

United States: 2025 Holiday Travel Guidelines for Foreign Nationals | #MobilityMinute

In this Mobility Minute, Associate Rebeca Lafond outlines key considerations for international travel to the United States during the holiday season, including documentation requirements, visa processing expectations and enhanced screening on entry.

Learn more

Media mentions

Bloomberg Law: Labor Department Expands H-1B Oversight, Tests Enforcement Power

Partner K. Edward Raleigh explains that the Department of Labor’s Project Firewall expands H-1B oversight beyond individual complaints and increases the scope of employer compliance reviews.

Learn more

Media mentions

Leading Britain's Conversation: Is Settlement Reform Rewarding Contribution or Rewriting the Rules of Fairness and Trust?

UK Government Affairs Strategy Director Shuyeb Muquit examines how proposed settlement reforms could reshape the path to UK residency by extending qualifying periods and linking eligibility to individual contribution.

Learn more

Podcast

Canada's Healthcare Staffing Solution

Partner Cosmina Morariu and Business Immigration Manager Ayana Ibrahimi discuss critical immigration strategies underpinning healthcare-sector staffing in Canada, unpacking how recent policy, mobility and compliance developments are affecting employers and global talent pipelines.

Learn more

Awards

Fragomen Named Private Client Team of the Year at The British Legal Awards 2025

Fragomen named Private Client Team of the Year at The British Legal Awards 2025, recognising the strength of our UK Private Client practice.

Learn more

Media mentions

Global Mobility Lawyer: Rising Immigration Fraud Creates New Compliance Challenges for US Firms

Partner Daniel Brown highlights rising deceptive practices in immigration and emphasizes stronger verification and compliance measures for employers.

Learn more

Media mentions

The Caterer: Casual Staff to Come Under New Right to Work Check Legislation

Senior Manager Louise Senior highlights how proposed UK reforms could expand right to work checks across hospitality and reshape compliance for businesses.

Learn more

Video

Vuvuzelas, Visas and Victory - Moving Football Across Africa | #FragomenFC - Ep. 12

Rick Lamanna, Jake Paul Minster and Lunga Mani discuss Africa’s path to the 2026 World Cup.

Learn more

Media mentions

Bloomberg: UK to Create New Fast-Track Residency Path for High-Earners

Partner Louise Haycock notes that the UK’s new fast-track residency route for high earners could affect how businesses plan for immigration costs.

Learn more

Blog post

Georgia Immigration Reform 2025: New Residence Permit Scrutiny for Foreign Nationals

Senior Manager Zaur Gasimov outlines Georgia’s stricter residence-permit requirements and enhanced monitoring measures introduced under the country’s 2025 immigration reforms.

Learn more

Media mentions

Times Higher Education: Hertfordshire Latest to Be Placed on Student Visa ‘Action Plan’

Senior Manager Jonathan Hill explains why more UK universities are on UKVI student visa action plans and how extended timeframes help them address compliance issues.

Learn more

Media mentions

Gazeta Prawna: Cyfrowy odwrót. Wojewodowie chcą odzyskać kontrolę nad kolejkami

Partner Karolina Schiffter explains why Poland has paused online residence permit bookings and returned to paper-based submissions.

Learn more

Video

United States: 2025 Holiday Travel Guidelines for Foreign Nationals | #MobilityMinute

In this Mobility Minute, Associate Rebeca Lafond outlines key considerations for international travel to the United States during the holiday season, including documentation requirements, visa processing expectations and enhanced screening on entry.

Learn more

Media mentions

Bloomberg Law: Labor Department Expands H-1B Oversight, Tests Enforcement Power

Partner K. Edward Raleigh explains that the Department of Labor’s Project Firewall expands H-1B oversight beyond individual complaints and increases the scope of employer compliance reviews.

Learn more

Media mentions

Leading Britain's Conversation: Is Settlement Reform Rewarding Contribution or Rewriting the Rules of Fairness and Trust?

UK Government Affairs Strategy Director Shuyeb Muquit examines how proposed settlement reforms could reshape the path to UK residency by extending qualifying periods and linking eligibility to individual contribution.

Learn more

Podcast

Canada's Healthcare Staffing Solution

Partner Cosmina Morariu and Business Immigration Manager Ayana Ibrahimi discuss critical immigration strategies underpinning healthcare-sector staffing in Canada, unpacking how recent policy, mobility and compliance developments are affecting employers and global talent pipelines.

Learn more

Awards

Fragomen Named Private Client Team of the Year at The British Legal Awards 2025

Fragomen named Private Client Team of the Year at The British Legal Awards 2025, recognising the strength of our UK Private Client practice.

Learn more

Media mentions

Global Mobility Lawyer: Rising Immigration Fraud Creates New Compliance Challenges for US Firms

Partner Daniel Brown highlights rising deceptive practices in immigration and emphasizes stronger verification and compliance measures for employers.

Learn more

Media mentions

The Caterer: Casual Staff to Come Under New Right to Work Check Legislation

Senior Manager Louise Senior highlights how proposed UK reforms could expand right to work checks across hospitality and reshape compliance for businesses.

Learn more

Video

Vuvuzelas, Visas and Victory - Moving Football Across Africa | #FragomenFC - Ep. 12

Rick Lamanna, Jake Paul Minster and Lunga Mani discuss Africa’s path to the 2026 World Cup.

Learn more

Media mentions

Bloomberg: UK to Create New Fast-Track Residency Path for High-Earners

Partner Louise Haycock notes that the UK’s new fast-track residency route for high earners could affect how businesses plan for immigration costs.

Learn more

Blog post

Georgia Immigration Reform 2025: New Residence Permit Scrutiny for Foreign Nationals

Senior Manager Zaur Gasimov outlines Georgia’s stricter residence-permit requirements and enhanced monitoring measures introduced under the country’s 2025 immigration reforms.

Learn more

Media mentions

Times Higher Education: Hertfordshire Latest to Be Placed on Student Visa ‘Action Plan’

Senior Manager Jonathan Hill explains why more UK universities are on UKVI student visa action plans and how extended timeframes help them address compliance issues.

Learn more

Media mentions

Gazeta Prawna: Cyfrowy odwrót. Wojewodowie chcą odzyskać kontrolę nad kolejkami

Partner Karolina Schiffter explains why Poland has paused online residence permit bookings and returned to paper-based submissions.

Learn more

Stay in touch

Subscribe to receive our latest immigration alerts

Subscribe

Our firm

  • About
  • Careers
  • Firm Governance
  • Media Inquiries
  • Recognition

Information

  • Attorney Advertising
  • Legal Notices
  • Privacy Policies
  • UK Regulatory Requirements

Our firm

  • About
  • Careers
  • Firm Governance
  • Media Inquiries
  • Recognition

Information

  • Attorney Advertising
  • Legal Notices
  • Privacy Policies
  • UK Regulatory Requirements

Have a question?

Contact Us
  • LinkedIn
  • Youtube
  • Instagram
  • Facebook
  • Twitter

© 2025 Fragomen, Del Rey, Bernsen & Loewy, LLP, Fragomen Global LLP and affiliates. All Rights Reserved.

Please note that the content made available on this site is not intended for visitors / customers located in the province of Quebec, and the information provided is not applicable to the Quebec market. To access relevant information that applies to the Quebec market, please click here.