
Country / Territory
Related contacts
Related offices
Related content
Related contacts
Related offices
Related content
Related contacts
Related offices
Related content
By: Siobhan Owers, Iskra Nikolic Uskokovic
Social security is likely to be one of the key areas affected by Brexit for employers with internationally mobile employees working between the UK and other EU countries.
Currently, when an EU national is posted to work in another member state on a temporary assignment, they can apply to continue paying into their home country’s social security system. This is often seen as the preferred option in terms of administrative ease and cost. However, following Brexit, the future legitimacy of this arrangement is open to doubt. Indeed, unless measures are introduced to extend these arrangements, posted workers and their employers may face payroll withholding challenges or fragmented contributions records. They may also become embroiled in disputes between countries as to where the social security lies or be subject to a liability in multiple countries for which there is no relief for a double social security liability. The focus on ensuring that sufficient consideration is given to these issues, and that suitable policies are put in place to manage this going forward, is key to risk management.
Key Points
The UK government believes it would be desirable to maintain some aspects of continued mobility between the UK and the EU with reciprocal arrangements in a new framework. This would support the close links between people and economies so that they continue after the UK leaves the EU. The UK’s future immigration rules would incorporate any mobility provisions agreed with the EU, in the same way they currently do in respect of the UK international agreements with other trading partners. This framework would represent what the UK agrees reciprocally, allowing the UK and the EU to set their own rules in all areas (be that in relation to immigration, social security, healthcare or related matters) where no commitments are taken.
The UK government’s White Paper refers to wider mobility areas, such as the future rules around social security coordination and where the UK would seek a reciprocal system for UK and EU nationals who are able to live, work or retire in the EU or the UK in the future. This could cover:
1. Arrangements relating to the uprating of state pensions, including export rules and accompanying aggregation principles for people who have contributed into multiple countries’ systems
2. A set of rules to determine how workers pay social security contributions to ensure that individuals only pay contributions to one state at a time
3. Reciprocal healthcare access for state pensioners retiring to the EU or the UK, continued participation in the European Health Insurance Card (EHIC) scheme for people currently staying in the UK or EU and cooperation on planned treatment
The payment of certain limited benefits or social security will be subject to the upcoming negotiation.
Considerations
The UK government’s White Paper leaves areas of uncertainty for those with work patterns subject to frequent change and for those who become mobile only after Brexit, for whom no access to the European regulations is currently envisaged, but where the shape of any future social security coordination regime is unknown.
For more information reach Siobhan Owers at [email protected] and Iskra Nikolic Uskokovic at [email protected].
Country / Territory
Related contacts
Related offices
Related content
Related contacts
Related offices
Related content
Related contacts
Related offices
Related content
Explore more at Fragomen
Blog post
Latin America & the Caribbean Managing Partner Leonor Echeverria, Senior Associates Sarah Blackmore and Sonya Cole and Senior Regional Knowledge Manager Laura Weingort examine renewed energy interest in Venezuela and outline key immigration pathways, procedural constraints and strategic considerations for compliant talent deployment.
Media mentions
Senior Manager Andreia Ghimis highlights how the EU’s new migration strategy could create opportunities for employers while increasing compliance requirements.
Awards
Partner Julia Onslow-Cole is recognised in the Spears 500 guide to leading private client advisers, reflecting her experience advising high-net-worth individuals, families and global businesses on complex UK and European immigration and mobility strategies.
Media mentions
Partner Abeer Al Husseini discusses increased scrutiny of Saudi business visas in AGBI, highlighting stricter review of short-term entry used for operational work and the implications for regional employers.
Awards
Australia and New Zealand Managing Partner Teresa Liu, Partner Charles Johanes, Practice Leaders Hedvika and Leader Ben Lear and Senior Associate Hannah Scanlan are recognized in the 2026 edition of Doyle’s Guide as leading immigration practitioners in Australia.
Awards
Fragomen is ranked Band 1 for Immigration: Business in the Chambers Global 2026 Guide, marking two decades of recognition since 2006. The firm is also the only firm ranked Band 1 in the Global: Multi-Jurisdictional Immigration category and receives additional individual recognitions in the USA: Business Immigration rankings.
Media mentions
Partner Rick Lamanna provides insight to Buffalo Toronto Public Media on potential IRCC processing challenges as Canada prepares for increased visa demand ahead of the 2026 FIFA World Cup.
Blog post
Immigration Director Deirdre Murray explores the impact of upcoming employment permit changes on employers and workforce planning in Ireland.
Video
Director David Iannella discusses how Global Entry can help frequent business travelers navigate US entry more predictably and access TSA PreCheck.
Video
Manager Russell Hodges and Associate Gurpreet Phalora explain key UK immigration considerations for London Fashion Week 2026.
Advisory services
Senior Counsel Jo Antoons and Immigration Supervisor Elisabeth Kamm explore the EU Blue Card recast and its impact for employers, highlighting how hiring, retention and mobility decisions are affected.
Blog post
Latin America & the Caribbean Managing Partner Leonor Echeverria, Senior Associates Sarah Blackmore and Sonya Cole and Senior Regional Knowledge Manager Laura Weingort examine renewed energy interest in Venezuela and outline key immigration pathways, procedural constraints and strategic considerations for compliant talent deployment.
Media mentions
Senior Manager Andreia Ghimis highlights how the EU’s new migration strategy could create opportunities for employers while increasing compliance requirements.
Awards
Partner Julia Onslow-Cole is recognised in the Spears 500 guide to leading private client advisers, reflecting her experience advising high-net-worth individuals, families and global businesses on complex UK and European immigration and mobility strategies.
Media mentions
Partner Abeer Al Husseini discusses increased scrutiny of Saudi business visas in AGBI, highlighting stricter review of short-term entry used for operational work and the implications for regional employers.
Awards
Australia and New Zealand Managing Partner Teresa Liu, Partner Charles Johanes, Practice Leaders Hedvika and Leader Ben Lear and Senior Associate Hannah Scanlan are recognized in the 2026 edition of Doyle’s Guide as leading immigration practitioners in Australia.
Awards
Fragomen is ranked Band 1 for Immigration: Business in the Chambers Global 2026 Guide, marking two decades of recognition since 2006. The firm is also the only firm ranked Band 1 in the Global: Multi-Jurisdictional Immigration category and receives additional individual recognitions in the USA: Business Immigration rankings.
Media mentions
Partner Rick Lamanna provides insight to Buffalo Toronto Public Media on potential IRCC processing challenges as Canada prepares for increased visa demand ahead of the 2026 FIFA World Cup.
Blog post
Immigration Director Deirdre Murray explores the impact of upcoming employment permit changes on employers and workforce planning in Ireland.
Video
Director David Iannella discusses how Global Entry can help frequent business travelers navigate US entry more predictably and access TSA PreCheck.
Video
Manager Russell Hodges and Associate Gurpreet Phalora explain key UK immigration considerations for London Fashion Week 2026.
Advisory services
Senior Counsel Jo Antoons and Immigration Supervisor Elisabeth Kamm explore the EU Blue Card recast and its impact for employers, highlighting how hiring, retention and mobility decisions are affected.


