• Insights

EU Court of Justice opens the door for host country to disregard Certificate of Coverage for Posted Workers

February 6, 2018

Countries / Territories

  • 🌐

Related offices

  • Brussels
  • Dublin
  • Frankfurt
  • London
  • Sheffield

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Related offices

  • Brussels
  • Dublin
  • Frankfurt
  • London
  • Sheffield

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Related offices

  • Brussels
  • Dublin
  • Frankfurt
  • London
  • Sheffield

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Within the field of global mobility of personnel, social security costs are as significant as immigration compliance. Due to the changing European legal landscape for immigration as well as for the posting of workers, social security has grown in importance as companies strategically plan for personnel assignments.

The application for a certificate of social security coverage (commonly now known as a CoC, or an A1 certificate amongst all the countries that apply the EU Regulations on social security) has become fundamental not only for showing compliance with social security obligations for the period of a temporary secondment, but also for securing work permits and for guaranteeing compliance with posted worker notification requirements from Day 1. New categories of work permits offering the possibility to work in various EU countries at the same time, like the ICT permit, raise important social security challenges.

According to consistent case-law of the Court of Justice of the European Union (‘CJEU’ or ‘the Court’), set out in the current European Regulations, a CoC should be considered binding, and therefore in principle does not allow the institutions of the host country to examine its validity.

The CJEU Judgment  

Today the CJEU has replied to a very important request for a preliminary ruling from the Belgian Supreme Court, in respect of the scope of the binding nature of the E101 certificate (C-359/16).

In its ruling, the CJEU follows the opinion of the Advocate-General Saug­mands­gaard Øe by stating that a court of the host country may disregard an E101 (or A1) certificate, formally issued in accordance with the provisions of the EU Regulations, by the competent institution of the home country, if that court finds that the certificate was obtained or invoked fraudulently.

In the current EU Regulations there is no definition of ‘fraud’ (yet). Anticipating an amendment of the Regulations, the CJEU suggests that fraud can be detected in cases where the applicant has the intention of concealing the fact that the objective conditions for requesting a CoC are not fulfilled. E.g. the condition that the employer continues to have an actual business in the home country.

The present ruling comes after yet another very important judgement of the CJEU of last year (C-620/15) in which the Court had re-confirmed its consolidated case-law by stating that a CoC is binding as long as the certificate has not been withdrawn or declared invalid by the authorities of the issuing Member State. This holds true even where it is found that the conditions under which the worker carries out his/her activities clearly do not fall within the material scope of the legal provision under which the certificate is issued.

Recalling the principles of cooperation and mutual trust between Member States, the CJEU’s decision today opens the door, for the first time, for the host country’s competent authorities to investigate the facts underlying the issuance of a CoC. If the home country fails to carry out a review of the certificate within a reasonable period of time in the light of evidence of fraud, and the certificate is not withdrawn or declared invalid by the home country, the host country will therefore be allowed to disregard the certificate. In practice, this will likely lead to retro-active applicability of host country social security, along with rather significant penalties.

Finally, considering another opinion of the same Advocate-General in a very recent pronouncement of January 31st, 2018, the CJEU may continue down the same road in the future in respect of other conditions that are fundamental for the issuance of a CoC, such as the fact that a posted worker cannot be sent in replacement of another posted worker.

How We Can Help

Although today’s judgment has to be viewed in light of the protests of many European countries in relation to ‘social dumping’ and the need to intervene in that respect, it will likely give rise to more investigative actions in respect of the CoC, from host country authorities.

Fragomen can assist your company with ensuring that A1 certificates are requested in accordance with the requirements of the EU Regulations, and make sure your company is compliant in both immigration and social security, from Day 1.

Countries / Territories

  • 🌐

Related offices

  • Brussels
  • Dublin
  • Frankfurt
  • London
  • Sheffield

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Related offices

  • Brussels
  • Dublin
  • Frankfurt
  • London
  • Sheffield

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Related offices

  • Brussels
  • Dublin
  • Frankfurt
  • London
  • Sheffield

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Explore more at Fragomen

Fragomen news

Fragomen's Immigration Guide for the UK Tech Sector

Fragomen’s "Immigration Guide for the UK Tech Sector" introduces visa options available for those working and recruiting in the tech sector.

Learn more

Blog post

The J-1 Research Scholar Visa: An Underutilized Pathway for Employers to Retain Global Research Talent

Center for Strategy and Applied Insights Senior Director Leah Rogal examines how employers can use the J-1 Research Scholar visa to retain eligible global research talent, support long-term research initiatives and strengthen workforce and immigration planning.

Learn more

Blog post

Twenty Years Forward: What the Middle East Reveals About the Future of Global Mobility

In this blog, Middle East and Africa Private Client Practice Director Nofi Mojidi-Bayna explores how evolving residency frameworks across the region are reshaping long-term mobility planning and examines the three global forces transforming immigration strategy for businesses, investors and internationally mobile families.

Learn more

Blog post

UK Launches Visa Fees Reimbursement Scheme for Scale Ups Hiring Global Talent

In this blog, Associate Halil Kaya outlines the UK Visa Fees Reimbursement Scheme for Scale Ups, including eligibility requirements, available funding and key considerations for high-growth businesses recruiting international talent.

Learn more

Media mentions

The PIE: Canada Fraud Case Exposes “Acute” Sector Integrity Issues

Partner Jack Kim discusses how fraud has shaped Canada's international student reforms and ongoing integrity efforts.

Learn more

Blog post

Skilled Worker Salary Changes: What Employers Need to Know

In this blog, Senior Associate Charlotte Roberts explains what these changes mean for employers, why salary discounts may no longer be a reliable long-term strategy and how early workforce planning can help businesses continue to access international talent while managing compliance and costs.

Learn more

Media mentions

Markt und Mittelstand: EU-Entsendung: Diese Fehler kosten Unternehmen bis zu 500.000 Euro

Senior Associate Isabel Schnitzler outlines the key compliance considerations for employers with employees working across the EU.

Learn more

Podcast

Reality Check Pt. 3: Immigration Law in Pop Culture

Associates Julia Manacher and Stephanie Weaver examine immigration issues emerging in a popular reality television series, including K-1 visa denials, consular non-reviewability, fraud findings and changing adjudication policies.

Learn more

Blog post

Separating Fact and Fiction: Debunking Myths in German Citizenship Law

Manager Dr. Adela Schmidt examines common misconceptions in German citizenship law, including birthright citizenship, dual citizenship, citizenship by descent and naturalization processing, and explains why eligibility often depends on specific legal requirements, timelines and documentation.

Learn more

Awards

Fragomen Professionals Named 2026 TLC Lions Human Awards Americas Finalists

Partner Audrea Golding, Senior Associate Kyle Sommer and Senior Talent Development Director Wendy Milici have been named finalists in the 2026 TLC Lions Human Awards Americas, recognizing their contributions to human-centered leadership, workplace culture and inclusion.

Learn more

Media mentions

Biometric Update: Fragomen and SICPA Form JV to Join Digital Identity Market With End-to-End Platform

Fragomen and SICPA have launched a global joint venture to develop an end-to-end digital identity platform that enables secure identity verification, document authentication and verifiable credential management.

Learn more

Media mentions

Times of India: Trump Administration Eyes Tighter H-1B, Green Card and Student Visa Rules; Indians Could Be Among Most Affected

Senior Counsel Mitch Wexler discusses how potential changes to H-1B visas, employment-based green cards and OPT could impact employers’ workforce planning and compliance obligations.

Learn more

Fragomen news

Fragomen's Immigration Guide for the UK Tech Sector

Fragomen’s "Immigration Guide for the UK Tech Sector" introduces visa options available for those working and recruiting in the tech sector.

Learn more

Blog post

The J-1 Research Scholar Visa: An Underutilized Pathway for Employers to Retain Global Research Talent

Center for Strategy and Applied Insights Senior Director Leah Rogal examines how employers can use the J-1 Research Scholar visa to retain eligible global research talent, support long-term research initiatives and strengthen workforce and immigration planning.

Learn more

Blog post

Twenty Years Forward: What the Middle East Reveals About the Future of Global Mobility

In this blog, Middle East and Africa Private Client Practice Director Nofi Mojidi-Bayna explores how evolving residency frameworks across the region are reshaping long-term mobility planning and examines the three global forces transforming immigration strategy for businesses, investors and internationally mobile families.

Learn more

Blog post

UK Launches Visa Fees Reimbursement Scheme for Scale Ups Hiring Global Talent

In this blog, Associate Halil Kaya outlines the UK Visa Fees Reimbursement Scheme for Scale Ups, including eligibility requirements, available funding and key considerations for high-growth businesses recruiting international talent.

Learn more

Media mentions

The PIE: Canada Fraud Case Exposes “Acute” Sector Integrity Issues

Partner Jack Kim discusses how fraud has shaped Canada's international student reforms and ongoing integrity efforts.

Learn more

Blog post

Skilled Worker Salary Changes: What Employers Need to Know

In this blog, Senior Associate Charlotte Roberts explains what these changes mean for employers, why salary discounts may no longer be a reliable long-term strategy and how early workforce planning can help businesses continue to access international talent while managing compliance and costs.

Learn more

Media mentions

Markt und Mittelstand: EU-Entsendung: Diese Fehler kosten Unternehmen bis zu 500.000 Euro

Senior Associate Isabel Schnitzler outlines the key compliance considerations for employers with employees working across the EU.

Learn more

Podcast

Reality Check Pt. 3: Immigration Law in Pop Culture

Associates Julia Manacher and Stephanie Weaver examine immigration issues emerging in a popular reality television series, including K-1 visa denials, consular non-reviewability, fraud findings and changing adjudication policies.

Learn more

Blog post

Separating Fact and Fiction: Debunking Myths in German Citizenship Law

Manager Dr. Adela Schmidt examines common misconceptions in German citizenship law, including birthright citizenship, dual citizenship, citizenship by descent and naturalization processing, and explains why eligibility often depends on specific legal requirements, timelines and documentation.

Learn more

Awards

Fragomen Professionals Named 2026 TLC Lions Human Awards Americas Finalists

Partner Audrea Golding, Senior Associate Kyle Sommer and Senior Talent Development Director Wendy Milici have been named finalists in the 2026 TLC Lions Human Awards Americas, recognizing their contributions to human-centered leadership, workplace culture and inclusion.

Learn more

Media mentions

Biometric Update: Fragomen and SICPA Form JV to Join Digital Identity Market With End-to-End Platform

Fragomen and SICPA have launched a global joint venture to develop an end-to-end digital identity platform that enables secure identity verification, document authentication and verifiable credential management.

Learn more

Media mentions

Times of India: Trump Administration Eyes Tighter H-1B, Green Card and Student Visa Rules; Indians Could Be Among Most Affected

Senior Counsel Mitch Wexler discusses how potential changes to H-1B visas, employment-based green cards and OPT could impact employers’ workforce planning and compliance obligations.

Learn more
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
Important Updates
Important Updates
July 20, 2026 | United StatesUnited States: August 2026 Visa Bulletin – Modest Advancement for Several Employment-Based Categories; EB-1 India May Become Unavailable in Coming Weeks; USCIS to Accept Final Action Dates for Employment-Based Categories
July 20, 2026 | United KingdomFragomen's Immigration Guide for the UK Tech Sector
July 20, 2026 | 🌐Middle East - The Latest News on Mobility and Travel Considerations
July 20, 2026 | South AfricaSouth Africa: Medical Report Requirement Waived for Certain Visa Types
July 20, 2026 | South AfricaSouth Africa: Trusted Employer Scheme Phase II Launched; Expressions of Interest Open
July 20, 2026 | United StatesUnited States: August 2026 Visa Bulletin – Modest Advancement for Several Employment-Based Categories; EB-1 India May Become Unavailable in Coming Weeks; USCIS to Accept Final Action Dates for Employment-Based Categories
July 20, 2026 | United KingdomFragomen's Immigration Guide for the UK Tech Sector
July 20, 2026 | 🌐Middle East - The Latest News on Mobility and Travel Considerations
July 20, 2026 | South AfricaSouth Africa: Medical Report Requirement Waived for Certain Visa Types
July 20, 2026 | South AfricaSouth Africa: Trusted Employer Scheme Phase II Launched; Expressions of Interest Open
July 20, 2026 | United StatesUnited States: August 2026 Visa Bulletin – Modest Advancement for Several Employment-Based Categories; EB-1 India May Become Unavailable in Coming Weeks; USCIS to Accept Final Action Dates for Employment-Based Categories
Subscribe

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
  • AI Transparency Statement
  • UK Regulatory Requirements

Our firm

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

Information

  • Attorney Advertising
  • Legal Notices
  • Privacy Policies
  • AI Transparency Statement
  • UK Regulatory Requirements

Have a question?

Contact Us
  • LinkedIn
  • Youtube
  • Instagram
  • Facebook
  • TikTok
  • 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.