Important Updates
Important Updates
March 16, 2026 | United KingdomUnited Kingdom: Relaxations Under ETA Scheme for British Dual Nationals
March 16, 2026 | GreeceGreece: Significant Immigration Reforms Include Tech and Talent Visa, Liberalizing EU Blue Card
March 16, 2026 | United KingdomLeading Britain's Conversation: One Old Arrest Can Stop You Entering the USA, Even If You Were Never Convicted
March 16, 2026 | 🌐Middle East - The Latest News on Mobility and Travel Considerations
March 16, 2026 | 🌐Minimum Salary Changes Announced
March 16, 2026 | United KingdomUnited Kingdom: Relaxations Under ETA Scheme for British Dual Nationals
March 16, 2026 | GreeceGreece: Significant Immigration Reforms Include Tech and Talent Visa, Liberalizing EU Blue Card
March 16, 2026 | United KingdomLeading Britain's Conversation: One Old Arrest Can Stop You Entering the USA, Even If You Were Never Convicted
March 16, 2026 | 🌐Middle East - The Latest News on Mobility and Travel Considerations
March 16, 2026 | 🌐Minimum Salary Changes Announced
March 16, 2026 | United KingdomUnited Kingdom: Relaxations Under ETA Scheme for British Dual Nationals
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
    Travel and Mobility Considerations: Situation in the Middle EastNavigating Immigration Under the Second Trump AdministrationImmigration 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

  • Travel and Mobility Considerations: Situation in the Middle East
  • Navigating Immigration Under the Second Trump Administration
  • 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

Photo of Harry Goldstraw

Harry Goldstraw

Senior 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

Photo of Harry Goldstraw

Harry Goldstraw

Senior 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

Photo of Harry Goldstraw

Harry Goldstraw

Senior 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: 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

Photo of Harry Goldstraw

Harry Goldstraw

Senior 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

Photo of Harry Goldstraw

Harry Goldstraw

Senior 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

Photo of Harry Goldstraw

Harry Goldstraw

Senior 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

Blog post

Costa Rica Retirement Visa: Application and Requirements for Pensionado Residency

Immigration Supervisor Michael Salas Guzman explains the key eligibility requirements, documentation considerations and benefits of Costa Rica’s Pensionado residency program for retirees receiving lifetime pension income from abroad.

Learn more

Media mentions

Leading Britain's Conversation: One Old Arrest Can Stop You Entering the USA, Even If You Were Never Convicted

Senior Manager William Diaz outlines how US authorities evaluate prior criminal records under ESTA and what UK travellers need to know when completing their applications.

Learn more

Awards

Canada Managing Partner Cosmina Morariu Receives FCCCO Women in Leadership Award

Canada Managing Partner Cosmina Morariu has received the France Canada Chamber of Commerce in Ontario (FCCCO) Women in Leadership Award, recognizing her leadership and contributions to the business and legal communities.

Learn more
Generic Insights

Media mentions

Diário Do Turismo: Brasil passa a emitir visto eletrônico para chineses e amplia mobilidade de negócios

Managing Director Diogo Kloper highlights how Brazil’s new electronic visa for Chinese citizens reduces bureaucracy, lowers costs and streamlines business and tourism travel.

Learn more

Blog post

Why Climate Disruptions Are Reshaping Mobility Strategy

Partner, Global Responsible Business Practices, Lisa Koenig, Lead Analyst Dominic Dietrich, Senior Associate Sarah Blackmore and Senior Associate Sonya Berenfeld Cole examine why climate disruptions are reshaping mobility strategy as economic loss, workforce displacement and travel risks require organizations to reassess workforce planning and operational resilience.

Learn more

Media mentions

Construction Management: What Tougher English Rules Mean for Construction Employers

Associate Ilaria Iovieno and Immigration Consultant Sean Pearce explain how the UK’s higher English language requirement for work visas affects construction employers.

Learn more

Visas

FIFA Mexico 2026 World Cup Entry Requirements: Visa and Immigration Guide

Senior Business Immigration Manager Vicente Duque outlines key immigration considerations for international visitors traveling to Mexico for the 2026 FIFA World Cup, including visa eligibility, entry documentation and travel between host countries.

Learn more

Video

A Guide to EU Visa Categories for Non-EU Nationals

Explore EU visa options for non-EU nationals, including Schengen, long-stay and work visas like the EU Blue Card. Find the right visa for your needs.

Learn more

Blog post

Artificial Wage Inflation in Business Immigration: Policy Misalignment and Employer Impact

Counsel Susan Steger examines how wage-driven selection mechanisms in programs such as the H-1B lottery and PERM can create incentives for artificial wage inflation and introduce new compliance and workforce planning challenges for employers.

Learn more

Media mentions

Global Mobility Lawyer: Give to Gain: Strengthening Safety and Legal Pathways for Migrant Women Experiencing Abuse

Director Gemma Hyslop examines how collaboration across the global mobility sector can help strengthen legal pathways and support for migrant women experiencing abuse.

Learn more

Media mentions

Global Mobility Lawyer: Middle East Conflict Puts Multinationals’ Crisis Plans Under the Microscope

Partner Abeer Al Husseini discussed immigration and duty-of-care challenges for employers amid Middle East travel disruptions.

Learn more

Awards

Partner Sarah K. Peterson Recognized as a 2026 Women in Business Honoree by the Minneapolis/St. Paul Business Journal

Partner Sarah K. Peterson is recognized by the Minneapolis/St. Paul Business Journal as a 2026 Women in Business honoree for her professional achievements and contributions to the Twin Cities business community.

Learn more

Blog post

Costa Rica Retirement Visa: Application and Requirements for Pensionado Residency

Immigration Supervisor Michael Salas Guzman explains the key eligibility requirements, documentation considerations and benefits of Costa Rica’s Pensionado residency program for retirees receiving lifetime pension income from abroad.

Learn more

Media mentions

Leading Britain's Conversation: One Old Arrest Can Stop You Entering the USA, Even If You Were Never Convicted

Senior Manager William Diaz outlines how US authorities evaluate prior criminal records under ESTA and what UK travellers need to know when completing their applications.

Learn more

Awards

Canada Managing Partner Cosmina Morariu Receives FCCCO Women in Leadership Award

Canada Managing Partner Cosmina Morariu has received the France Canada Chamber of Commerce in Ontario (FCCCO) Women in Leadership Award, recognizing her leadership and contributions to the business and legal communities.

Learn more
Generic Insights

Media mentions

Diário Do Turismo: Brasil passa a emitir visto eletrônico para chineses e amplia mobilidade de negócios

Managing Director Diogo Kloper highlights how Brazil’s new electronic visa for Chinese citizens reduces bureaucracy, lowers costs and streamlines business and tourism travel.

Learn more

Blog post

Why Climate Disruptions Are Reshaping Mobility Strategy

Partner, Global Responsible Business Practices, Lisa Koenig, Lead Analyst Dominic Dietrich, Senior Associate Sarah Blackmore and Senior Associate Sonya Berenfeld Cole examine why climate disruptions are reshaping mobility strategy as economic loss, workforce displacement and travel risks require organizations to reassess workforce planning and operational resilience.

Learn more

Media mentions

Construction Management: What Tougher English Rules Mean for Construction Employers

Associate Ilaria Iovieno and Immigration Consultant Sean Pearce explain how the UK’s higher English language requirement for work visas affects construction employers.

Learn more

Visas

FIFA Mexico 2026 World Cup Entry Requirements: Visa and Immigration Guide

Senior Business Immigration Manager Vicente Duque outlines key immigration considerations for international visitors traveling to Mexico for the 2026 FIFA World Cup, including visa eligibility, entry documentation and travel between host countries.

Learn more

Video

A Guide to EU Visa Categories for Non-EU Nationals

Explore EU visa options for non-EU nationals, including Schengen, long-stay and work visas like the EU Blue Card. Find the right visa for your needs.

Learn more

Blog post

Artificial Wage Inflation in Business Immigration: Policy Misalignment and Employer Impact

Counsel Susan Steger examines how wage-driven selection mechanisms in programs such as the H-1B lottery and PERM can create incentives for artificial wage inflation and introduce new compliance and workforce planning challenges for employers.

Learn more

Media mentions

Global Mobility Lawyer: Give to Gain: Strengthening Safety and Legal Pathways for Migrant Women Experiencing Abuse

Director Gemma Hyslop examines how collaboration across the global mobility sector can help strengthen legal pathways and support for migrant women experiencing abuse.

Learn more

Media mentions

Global Mobility Lawyer: Middle East Conflict Puts Multinationals’ Crisis Plans Under the Microscope

Partner Abeer Al Husseini discussed immigration and duty-of-care challenges for employers amid Middle East travel disruptions.

Learn more

Awards

Partner Sarah K. Peterson Recognized as a 2026 Women in Business Honoree by the Minneapolis/St. Paul Business Journal

Partner Sarah K. Peterson is recognized by the Minneapolis/St. Paul Business Journal as a 2026 Women in Business honoree for her professional achievements and contributions to the Twin Cities business community.

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

© 2026 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.