Workplace and Occupational Pensions for Internationally Mobile Employees

The Basic Auto-Enrolment Framework

UK auto-enrolment (introduced in 2012 and now fully implemented) requires all UK employers to automatically enrol eligible workers into a qualifying pension scheme and make minimum contributions. Eligibility conditions are:

• Aged between 22 and state pension age
• Earning above the auto-enrolment earnings trigger (£10,000 per year in 2026/27)
• "Ordinarily working in the UK"

The third condition is the critical one for internationally mobile workers.

"Ordinarily Working in the UK"

HMRC and The Pensions Regulator define "ordinarily working in the UK" broadly as where the UK is the habitual place of work — where the employee principally performs their employment. An employee who works entirely overseas, based in a host country, is not ordinarily working in the UK and is therefore not subject to UK auto-enrolment.

An employee who works in the UK as their base but travels extensively abroad — or who is temporarily posted abroad — is generally still considered to be ordinarily working in the UK, and auto-enrolment continues to apply.

The distinction matters in practice: an employee posted from London to Dubai for two years retains UK auto-enrolment status if the UK remains their contractual base. An employee directly employed by an overseas operation, whose employment is governed by local law, does not.

Opting Out

Auto-enrolment is not compulsory in the sense that employees can opt out. However, employees must be re-enrolled every three years — and failure to opt out of a re-enrolment window can inadvertently trigger pension scheme membership. For those holding Fixed Protection certificates, this is critical: automatic re-enrolment into a pension scheme can invalidate the Fixed Protection and permanently lose the higher PCLS entitlement. Monitor re-enrolment dates carefully.

The Multi-Employer International Model

Large multinationals with significant internationally mobile workforces often operate International Pension Plans (IPPs) — sometimes called Global Employee Benefit Plans. These are pension arrangements typically registered offshore, in jurisdictions such as:

• Guernsey or Jersey (common for UK-connected IPPs)
• Cayman Islands (for global US-connected organisations)
• Singapore (for Asia-Pacific regional plans)
• Luxembourg (for European-focused plans)

IPPs are designed to be portable across multiple jurisdictions — an employee moving between the UK, US, Singapore, and UAE over a 20-year career can accumulate pension savings in a single IPP without the complications of managing multiple local pension schemes.

Tax Treatment of IPPs

UK personal tax relief is not available on contributions to IPPs (because they are not UK-registered pension schemes). However:

• Employer contributions to IPPs may be made on a tax-advantaged basis in the relevant offshore jurisdiction.
• Many countries in which IPP members are resident have tax treaty provisions that give favourable treatment to international pension contributions and benefits.
• IPP income on retirement may be taxed under the relevant DTT at relatively favourable rates.

For employees in companies that offer an IPP, the plan is typically the best available pension provision for international mobility. It is worth understanding the plan's terms, the vesting schedule, and the investment options.

The Absence of IPP for Smaller Employers

Many internationally mobile workers are employed by smaller UK companies without sophisticated international HR infrastructure. These employees often find that when they go abroad, no employer pension provision follows them. The employer may:

• Stop contributing to a UK group personal pension (if the employee is no longer UK-based)
• Make contributions to a local scheme in the host country (which may have limited benefit at the end of the posting)
• Simply have no pension arrangement for the overseas posting period

This gap — which can last years — is one of the most common sources of pension deficit for internationally mobile workers. Options for filling the gap include:

• Maintaining personal contributions to a UK SIPP (up to the £3,600 gross minimum, or more if UK earnings remain subject to UK income tax)
• Enquiring about whether employer contributions to the UK scheme can be maintained contractually
• Considering a QROPS if genuinely permanently relocated to a country where this makes sense

For internationally mobile workers without adequate employer pension provision overseas, the practical options are:

UK SIPP contributions: Up to £3,600 gross per year for non-residents, or up to 100% of relevant UK earnings if those earnings remain subject to UK income tax. Continuity of SIPP membership maintains carry forward eligibility for large contributions in future UK tax years.

Voluntary NI contributions: Maintaining State Pension entitlement through voluntary Class 3 contributions is often the most cost-effective pension "contribution" available to someone abroad with no overseas employer provision. (Voluntary Class 2 contributions for periods spent abroad were abolished from 6 April 2026 for most people, so Class 3 — approximately £18.40 per week in 2026/27 — is now the standard route; narrow exceptions remain, such as those treated as self-employed in the UK under a social security agreement.)

ISA before departure: Those who know they are moving abroad can use ISA allowances in the final UK tax year (you cannot contribute to an ISA once non-UK resident, but the ISA continues to grow tax-free and can be maintained indefinitely). This is a cash buffer rather than a pension, but relevant to overall retirement planning.