Auto-Enrolment: What Employers and the Self-Employed Need to Know

Since its introduction in 2012, auto-enrolment has enrolled over 11 million workers into a workplace pension. The principle is straightforward: eligible workers are automatically enrolled into a qualifying pension scheme, and must actively opt out if they do not want to participate. Opt-out rates have remained far lower than many predicted — the default is now participation, not exclusion.

For business owners, HR directors, and internationally mobile professionals who move between different employment arrangements, understanding the auto-enrolment framework is essential. This guide covers the employer obligations, worker eligibility, scheme requirements, and the specific rules that apply when staff work across borders.

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The Auto-Enrolment Framework

Auto-enrolment is governed by the Pensions Act 2008 and administered by The Pensions Regulator (TPR). The core rules are:

• Every UK employer must automatically enrol eligible workers into a qualifying pension scheme
• Employers must contribute at least 3% of qualifying earnings (since April 2019)
• Eligible workers are enrolled at a minimum employee contribution of 5% (since April 2019), giving a total minimum of 8%
• Workers who meet the eligible criteria but are not automatically enrolled must be enrolled within certain time limits
• Workers who opt out must be re-enrolled every three years

"Qualifying earnings" is defined as earnings between the lower qualifying earnings limit (£6,240 in 2026/27) and the upper earnings limit (£50,270). These thresholds have been frozen at the same levels for several years. Both employer and employee contributions are calculated on earnings within this band, not total salary.

Example: A worker earning £30,000 per year. Qualifying earnings are £30,000 - £6,240 = £23,760. Employer minimum contribution: 3% × £23,760 = £713/year. Employee minimum contribution: 5% × £23,760 = £1,188/year. Total: £1,901/year or approximately 6.3% of gross salary.

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Which Workers Must Be Auto-Enrolled

The Pensions Regulator divides workers into three categories.

Eligible jobholders — must be auto-enrolled

These workers must be automatically enrolled and cannot be excluded:

• Aged between 22 and state pension age (currently 66)
• Working in the UK
• Earning above the earnings trigger (£10,000 per year in 2026/27, or £833/month, or £192/week for weekly-paid staff)

Employers must enrol eligible jobholders within 6 weeks of their assessment date (typically the first day of employment).

Non-eligible jobholders — can opt in

Workers in this category are not automatically enrolled but have the right to opt in to the workplace pension (and the employer must then contribute):

• Aged 16-21 or state pension age to 74; and earning above £6,240; OR
• Aged 22 to state pension age; and earning between £6,240 and £10,000

If a non-eligible jobholder opts in, the same minimum contribution rates apply (8% total, at least 3% from the employer).

Entitled workers — can join, no employer contribution required

Workers earning below £6,240 can request membership of the pension scheme, but the employer is not required to contribute. They can contribute themselves (the contribution attracts tax relief through the scheme's method, typically relief at source).

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Postponement: A Useful Tool for New Starters

Employers are permitted to postpone assessment for new starters by up to three months. During the postponement window, the employer does not have to enrol the worker. This is useful for:

• Roles with high early turnover (short-contract or probationary roles)
• Seasonal employment
• Giving new starters time to familiarise themselves with the employer's pension arrangements before auto-enrolment takes effect

If the worker is still eligible at the end of the postponement period, they must be enrolled immediately. The employer must write to the worker within six weeks of the start of the postponement to explain the delay.

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Qualifying Pension Schemes

Not every pension scheme qualifies for auto-enrolment. A qualifying scheme must:

• Be a registered pension scheme (or certain overseas schemes for overseas employees)
• Meet the minimum contribution requirements
• Not require members to make investment decisions that could result in a loss of capital (in basic terms, cash funds are acceptable but certain high-risk or complex products are not)
• Not impose excessive or unusual charges

The major auto-enrolment providers as at 2026:

• NEST (National Employment Savings Trust): The government-backed scheme with a duty to accept all employers. Charges: 0.3% annual management charge plus a 1.8% charge on contributions. No minimum employer or employee count. Ideal for small employers.
• The People's Pension: A not-for-profit master trust. Low charges. Popular with SMEs.
• NOW: Pensions: A master trust founded in Denmark. Serves approximately 2 million members. Flat administration charge plus a low annual fund charge.
• Smart Pension: A modern tech-driven master trust with digital administration.
• Insurer-based schemes (Aviva, Legal & General, Scottish Widows, Zurich): More suitable for medium-to-large employers. May offer better fund ranges and flexibility but require minimum workforce sizes.

For businesses that already have an existing workplace pension — a group personal pension (GPP) established before auto-enrolment — the existing scheme can typically be used for auto-enrolment purposes, provided it meets the qualifying criteria.

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The Re-Enrolment Requirement

Even workers who have opted out of the pension scheme must be re-enrolled every three years.

The re-enrolment date is chosen by the employer (within a three-month window around the third anniversary of the staging date or previous re-enrolment date). The employer must:

• Identify all workers who opted out or stopped contributing during the previous three years
• Assess whether they are eligible jobholders at the re-enrolment date
• Re-enrol those who qualify
• Notify workers that they have been re-enrolled
• Submit a re-declaration of compliance to The Pensions Regulator

Workers can opt out again if they choose. They are not compelled to remain enrolled. But the three-year re-enrolment cycle ensures that workers' choices are regularly revisited, and that those whose circumstances have changed (for example, those who opted out during financial difficulty but are now in a better position) are given a fresh opportunity to participate.

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What Happens When Employees Opt Out

An eligible worker who opts out within one month of being enrolled is treated as if they were never enrolled. Any contributions that were deducted are refunded.

If a worker opts out after more than one month, the pension pot that has accumulated remains in the scheme. The worker does not receive a refund of contributions already made. The pot becomes a small deferred pension.

Workers who opt out lose:

• The employer's contribution (typically 3-5% of qualifying earnings — significant "free money")
• The tax relief on their own contributions
• The long-term compound investment growth on both

An opt-out is almost never in a worker's financial interest unless they are in genuine short-term financial crisis. Reducing contributions to the minimum is preferable to opting out entirely.

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The Duty to Comply and TPR Enforcement

The Pensions Regulator has wide enforcement powers. Penalties for non-compliance include:

• A Fixed Penalty Notice of £400 for failure to comply with a compliance notice
• An Escalating Penalty Notice of £50-£10,000 per day, depending on the number of employees
• In serious cases, prosecution

Employers who fail to enrol eligible workers correctly must also back-pay employer contributions (with interest) for the period of non-compliance.

The most common compliance failures are:

• Failing to assess workers at the correct time
• Applying the postponement period incorrectly
• Enrolling workers into a non-qualifying scheme
• Using an incorrect definition of "qualifying earnings"
• Failing to complete re-enrolment on time

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Auto-Enrolment and Internationally Mobile Employees

The auto-enrolment rules apply to workers who "ordinarily work in the UK." This has specific implications for internationally mobile workforces.

UK-based employees on overseas secondment:

Workers who are employed on UK contracts and seconded overseas for periods of up to approximately two years are typically still considered to "ordinarily work in the UK" for auto-enrolment purposes. The employer's auto-enrolment obligations continue during the secondment. This means the employer must continue to enrol them (and make contributions) even while the employee is physically working in another country.

Workers who have permanently relocated overseas:

If an employee has genuinely transferred to a local contract in another country — not a UK secondment — they are no longer ordinarily working in the UK and auto-enrolment obligations do not apply. The employer should assess carefully whether the arrangement is a genuine local contract or a continuation of UK employment.

Overseas employees hired directly into UK operations:

A foreign national brought into the UK on a UK contract is subject to auto-enrolment from the point they begin working in the UK, assuming they meet the age and earnings criteria.

Implications for employer pension planning:

Employers with internationally mobile staff should review whether their pension scheme can accommodate:

• Overseas addresses for members
• International bank accounts for potential QROPS transfers
• The cross-border reporting and compliance requirements

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The Self-Employed and Auto-Enrolment

Auto-enrolment does not apply to the self-employed. There is no employer to mandate enrolment, and the self-employed individual is both employer and worker.

This creates a significant pension saving gap. Self-employed individuals must take deliberate, self-directed action to save for retirement. The vehicles available are:

• Personal pension or SIPP: Up to the lower of £60,000 or 100% of UK relevant earnings per year (or £3,600 per year if relevant earnings are below £3,600). Contributions attract tax relief at the marginal rate.
• SSAS (Small Self-Administered Scheme): Available to directors and owner-managers of limited companies; allows commercial property to be held within the pension.

The government has discussed extending some form of auto-enrolment obligations to the self-employed — requiring that a pension is set up, even if contributions are not compulsory — but no legislation had been enacted as at 2026.

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FCA Compliance Caveat

Pension investments can fall as well as rise. Auto-enrolment legislation is complex, and the specific rules for any employer depend on their individual workforce, payroll arrangements, and employment structure. Tax rules, contribution limits, and earnings triggers change annually. This guide reflects the position as at 2026 and is for general information only; it is not a substitute for advice from a pension adviser, employment lawyer, or payroll professional. Seek regulated advice before setting up a qualifying workplace pension scheme or assessing your obligations for international employees.

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How Global Investments Can Help

Global Investments advises employers, business owners, and international assignees on pension arrangements spanning UK and overseas obligations. Whether you are establishing a qualifying pension scheme for a UK workforce, reviewing the auto-enrolment implications of seconding employees overseas, or exploring executive pension arrangements beyond auto-enrolment minimums, our team can provide the specialist guidance required.

Contact us to discuss your employer pension obligations and the options available to your workforce.