Important Updates
Important Updates
October 3, 2025 | United StatesUnited States: Supreme Court Again Permits DHS to Terminate 2023 TPS Designation for Venezuela While Litigation Continues
October 3, 2025 | ArgentinaArgentina: Provisional Certificate Policy Change Extends In-Country Work Authorization Timelines
October 3, 2025 | KazakhstanKazakhstan: New Work Permit Process Rules, Including Labor Market Test and New Online Portal
October 3, 2025 | United StatesThe American Lawyer: Proposed H-1B Changes Make Foreign Lawyers More Expensive, but Also More Accessible
October 3, 2025 | United StatesUnited States: Lawsuit Filed Challenging New H-1B Restrictions and $100,000 Fee
October 3, 2025 | United StatesUnited States: Supreme Court Again Permits DHS to Terminate 2023 TPS Designation for Venezuela While Litigation Continues
October 3, 2025 | ArgentinaArgentina: Provisional Certificate Policy Change Extends In-Country Work Authorization Timelines
October 3, 2025 | KazakhstanKazakhstan: New Work Permit Process Rules, Including Labor Market Test and New Online Portal
October 3, 2025 | United StatesThe American Lawyer: Proposed H-1B Changes Make Foreign Lawyers More Expensive, but Also More Accessible
October 3, 2025 | United StatesUnited States: Lawsuit Filed Challenging New H-1B Restrictions and $100,000 Fee
October 3, 2025 | United StatesUnited States: Supreme Court Again Permits DHS to Terminate 2023 TPS Designation for Venezuela While Litigation Continues
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 AdministrationTravel & Mobility Considerations: Situation in the Middle EastImmigration 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
  • Travel & Mobility Considerations: Situation in the Middle East
  • 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 Court of Justice of the European Union Reconfirms the Possibility to Disregard A1 Forms for Posted Workers

April 17, 2020

European Union

Countries / Territories

  • BelgiumBelgium
  • LuxembourgLuxembourg
  • NetherlandsNetherlands

Related contacts

Wim Cocquyt

Wim Cocquyt

Client Engagement Director Europe

Brussels (Benelux), Belgium

Email

[email protected]

T:+32 (0)2 250 4875

Related offices

  • Brussels (Benelux)

Related content

  • Fragomen Consulting Europe

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

Related offices

  • Brussels (Benelux)

Related content

  • Fragomen Consulting Europe

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

Related offices

  • Brussels (Benelux)

Related content

  • Fragomen Consulting Europe

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

By: Wim Cocquyt, Kristine Zaiceva

The COVID-19 pandemic is receiving the full attention of all government authorities worldwide, and companies and employees have been forced to change existing work patterns or work locations (e.g., by introducing extensive measures of smart or remote working), which is also impacting the social security compliance.

As is widely known, certificates of social security coverage (like A1 forms in Europe) have acquired more importance recently, especially in Europe. This is due to the increased (short term) mobility, on the one hand, and the wish of many countries to monitor the immigration, employment and social security compliance for workers temporarily employed in an EU country, on the other.

In principle, a worker is subject to the social security legislation of the country of employment, unless he/she has a valid A1 certificate indicating the applicable legislation: for example, in case of a business traveller, a temporary “posting” or work activities in two or more countries at the same time. The recent enforcement measures for posted workers, as well as the new forms of EU-wide immigration permits, progressively show the need for workers to hold a valid A1 form.

In that context, the Court of Justice of the European Union (hereafter “CJEU” or “the Court”) has pronounced its judgment in the joined cases C‑370/17 and C‑37/18, better known as the Vueling-cases, and taken the opportunity to further elaborate on the binding nature of the certificate of coverage and on the conditions that need to be fulfilled before an A1 form can be disregarded by the host country.

 

Background

According to consolidated case-law of the CJEU, a certificate of social security coverage should be considered binding, as long as the certificate has not been withdrawn or declared invalid by the authorities of the issuing Member State (see e.g. case C‑620/15).

However, as a response to the above-mentioned need for countries to monitor compliance for workers in short-term mobility and to fight “social dumping,” the Court ruled in 2018 that national courts of the host country have the ability to disregard an A1 certificate, in the event it was issued fraudulently and the home country is not willing to withdraw it (see case C-359/16 commented in one of our previous blog posts here).

 

The Vueling-judgement

With the judgment of 2 April 2020, the CJEU has fine-tuned its position, clarifying that the existence of evidence of fraud cannot be sufficient for the courts of the host country to put aside an A1 certificate.

Based on the principles of sincere cooperation and mutual trust between EU Member States, the competent authority of the host country must first promptly engage in a dialogue and collaborate closely with the issuing authority in the home country, allowing the latter to review the facts and make a decision to withdraw or cancel the certificate within a reasonable timeframe.

In other words, the Court has underlined that the specific reconciliation procedure between the competent authorities of home and host country, laid down in the EU social security regulations, must always be followed. Only if that has happened, can a court of the host country draw any conclusion on a final finding of fraud, and eventually disregard an A1 form.

Whereas in previous occasions the CJEU had always followed the opinion of the Advocate-General, it now takes a clear distance from his advice to allow for a more liberal approach, by invoking the principle of legal certainty and re-confirming the value of the A1 form.

 

How Fragomen Can Help

The present Court decision shows once more the importance of obtaining A1 forms for workers who travel for business or work to another European country in accordance with the rules of the EU social security regulations.

Where A1 forms are not requested accordingly, they can be disregarded under certain conditions by the courts of the host country. Importantly, the risk of retroactive applicability of host country social security, along with significant penalties, is realistic.

Considering the growing short-term mobility, A1 forms are increasingly important documents to help monitor compliance from an immigration and posted workers perspective. In the fight against social dumping, it can be expected that host country authorities will always more closely examine the validity of A1 certificates.

For additional information and to discuss the concerns of Posted Workers and the social security impact of COVID-19 on your company, as well as to plan strategically for remobilisation and an efficient deployment of your mobile workforce following the pandemic’s emergency period, please do not hesitate to reach out to us or to your usual Fragomen immigration professional.

 

Wim Cocquyt
[email protected]
 
Kristine Zaiceva
[email protected]

Countries / Territories

  • BelgiumBelgium
  • LuxembourgLuxembourg
  • NetherlandsNetherlands

Related contacts

Wim Cocquyt

Wim Cocquyt

Client Engagement Director Europe

Brussels (Benelux), Belgium

Email

[email protected]

T:+32 (0)2 250 4875

Related offices

  • Brussels (Benelux)

Related content

  • Fragomen Consulting Europe

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

Related offices

  • Brussels (Benelux)

Related content

  • Fragomen Consulting Europe

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

Related offices

  • Brussels (Benelux)

Related content

  • Fragomen Consulting Europe

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Explore more at Fragomen

Video

Bangladesh: Security Clearances and Challenges

Senior Manager Corrine Tan and Assistant Business Immigration Manager Joycelyn Ang discuss Bangladesh’s work permit security clearance process.

Learn more

Media mentions

The American Lawyer: Proposed H-1B Changes Make Foreign Lawyers More Expensive, but Also More Accessible

Partner Bo Cooper outlines how the proposed H-1B changes could affect Big Law hiring for foreign lawyers.

Learn more

Fragomen news

2025年9月 アメリカ移民法ダイジェストLearn more

Media mentions

Computer Weekly: How UK Immigration Must Evolve to Attract the Best Global Talent

Senior Manager Kinka Tonchev highlights how UK immigration must adapt to attract, retain and support the world’s top talent.

Learn more

Media mentions

Construction Management: Immigration Compliance: Is Your Firm Violating Visa Rules?

Manager Kirsty Moore and Trainee Solicitor Amanda Ong highlight rising UK construction sponsor licence risks and how businesses can stay compliant.

Learn more

Awards

Partner Abeer Al Husseini Recognised at the Gulf Business Awards 2025

Partner Abeer Al Husseini is recognised on the shortlist for "Women Leader of the Year" at the Gulf Business Awards 2025.

Learn more

Media mentions

The Washington Post: How Companies Might Avoid Trump’s New $100K Visa

Co-Chair Enrique Gonzalez highlights approaches for companies navigating changes to the H-1B visa process.

Learn more

Video

How to Get Your French Work Visa After Graduation: Job Seeker / Company Creation Permit

Learn how international graduates can stay in France for one year to find work or start a business. Discover eligibility requirements, application steps and transition options for the Job Seeker/New Business Creator permit. 

Learn more

Awards

Partner Priscilla Muhlenkamp Named 2025 National Law Journal Awards Finalist for "DC Managing Partner of the Year"

Partner Priscilla Muhlenkamp is a finalist for the 2025 National Law Journal Awards category, "DC Managing Partner of the Year."

Learn more

Media mentions

Post Bulletin: Trump’s New $100K Fee on Certain Work Visas Could Impact Rochester’s Medical Staff

Partner Bo Cooper highlights that new $100K H-1B fees could affect US employers, with possible exemptions for critical roles.

Learn more

Media mentions

The Caterer: Businesses Need to Be Ready for Government Crackdown on Sponsor Licences

Partner Louise Senior highlights the impact of record-breaking UK sponsor licence revocations and the steps hospitality businesses can take to manage compliance.

Learn more

Media mentions

Folha de São Paulo: Taxa de US$ 100 mil para visto dos EUA muda planosde brasileiros; veja opções

Partner Bo Cooper explores the impact of H-1B visa changes on companies and their talent strategies.

Learn more

Video

Bangladesh: Security Clearances and Challenges

Senior Manager Corrine Tan and Assistant Business Immigration Manager Joycelyn Ang discuss Bangladesh’s work permit security clearance process.

Learn more

Media mentions

The American Lawyer: Proposed H-1B Changes Make Foreign Lawyers More Expensive, but Also More Accessible

Partner Bo Cooper outlines how the proposed H-1B changes could affect Big Law hiring for foreign lawyers.

Learn more

Fragomen news

2025年9月 アメリカ移民法ダイジェストLearn more

Media mentions

Computer Weekly: How UK Immigration Must Evolve to Attract the Best Global Talent

Senior Manager Kinka Tonchev highlights how UK immigration must adapt to attract, retain and support the world’s top talent.

Learn more

Media mentions

Construction Management: Immigration Compliance: Is Your Firm Violating Visa Rules?

Manager Kirsty Moore and Trainee Solicitor Amanda Ong highlight rising UK construction sponsor licence risks and how businesses can stay compliant.

Learn more

Awards

Partner Abeer Al Husseini Recognised at the Gulf Business Awards 2025

Partner Abeer Al Husseini is recognised on the shortlist for "Women Leader of the Year" at the Gulf Business Awards 2025.

Learn more

Media mentions

The Washington Post: How Companies Might Avoid Trump’s New $100K Visa

Co-Chair Enrique Gonzalez highlights approaches for companies navigating changes to the H-1B visa process.

Learn more

Video

How to Get Your French Work Visa After Graduation: Job Seeker / Company Creation Permit

Learn how international graduates can stay in France for one year to find work or start a business. Discover eligibility requirements, application steps and transition options for the Job Seeker/New Business Creator permit. 

Learn more

Awards

Partner Priscilla Muhlenkamp Named 2025 National Law Journal Awards Finalist for "DC Managing Partner of the Year"

Partner Priscilla Muhlenkamp is a finalist for the 2025 National Law Journal Awards category, "DC Managing Partner of the Year."

Learn more

Media mentions

Post Bulletin: Trump’s New $100K Fee on Certain Work Visas Could Impact Rochester’s Medical Staff

Partner Bo Cooper highlights that new $100K H-1B fees could affect US employers, with possible exemptions for critical roles.

Learn more

Media mentions

The Caterer: Businesses Need to Be Ready for Government Crackdown on Sponsor Licences

Partner Louise Senior highlights the impact of record-breaking UK sponsor licence revocations and the steps hospitality businesses can take to manage compliance.

Learn more

Media mentions

Folha de São Paulo: Taxa de US$ 100 mil para visto dos EUA muda planosde brasileiros; veja opções

Partner Bo Cooper explores the impact of H-1B visa changes on companies and their talent strategies.

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.