UK Civil Penalties for Illegal Working: Employer Guide

Civil penalties for illegal working are one of the most significant immigration compliance risks faced by UK employers. The Home Office may impose a civil penalty where an employer employs an adult who is disqualified from employment by reason of their immigration status and the employer cannot establish a statutory excuse. The regime is designed to make right to work compliance a live HR control, not a paperwork exercise carried out only at onboarding.

This article is for UK employers, HR teams, in-house counsel, sponsor licence holders and business owners who need to reduce illegal working risk, improve right to work systems or respond to a Home Office referral notice or civil penalty notice. It is also relevant to employers using Students, time-limited visa holders, eVisa holders, agency labour or decentralised recruitment processes.

What Is a Civil Penalty for Illegal Working?

Under section 15 of the Immigration, Asylum and Nationality Act 2006, an employer may be liable if it employs an adult who does not have permission to work in the UK, whose permission has expired or ceased to have effect, or whose immigration conditions do not permit the work in question. Liability is not limited to deliberate non-compliance. An employer can be exposed even where the error arose from a missed follow-up check, use of the wrong checking route or misunderstanding of work restrictions.

The civil regime sits alongside criminal liability. An employer may face imprisonment and an unlimited fine if found guilty of employing someone whom they knew, or had reasonable cause to believe, did not have the right to work in the UK. Civil and criminal risk should therefore be assessed separately, especially where warnings were ignored or documents appeared false.

Current Penalty Levels for Illegal Working

For checks covered by the Home Office Code of Practice from 13 February 2024, the penalty starting point is £45,000 per worker for a first breach and £60,000 per worker for a repeat breach within three years, before any reductions are applied. The actual penalty depends on the statutory excuse position and any mitigation accepted by the Home Office, including cooperation and evidence of effective right to work systems.

Employers should not treat mitigation as a substitute for compliance. The strongest answer to a civil penalty is usually a complete statutory excuse, supported by dated and retrievable evidence.

How Employers Establish a Statutory Excuse

A statutory excuse is the employer’s defence to a civil penalty. Home Office guidance explains that it is obtained by carrying out the prescribed right to work check before employment starts and, where permission is time-limited, carrying out a follow-up check shortly before the permission expires.

The correct check depends on the worker’s status and nationality. Current Home Office guidance recognises three broad routes: a manual document check, a Home Office online right to work check, and a digital verification service check for eligible British or Irish citizens. For many non-British and non-Irish citizens, including eVisa holders, the online Home Office checking service is central.

A common error is assuming that possession of a document is enough. It is not. Employers must use the correct process, check that the information relates to the person presenting for work, confirm that the work is permitted, and retain evidence in the required form.

Common Right to Work Failures

Civil penalties often arise from routine process failures rather than deliberate misconduct. The most common risk points include late onboarding checks, missed repeat checks, manual checks where an online check was required, failure to check work conditions, and poor record retention.

Student workers require particular care. Employers must understand the worker’s permitted hours, term-time restrictions and the role being performed. It is not enough to know that a Student has some right to work; the employer must ensure that the actual hours and duties remain within the conditions shown by the right to work check and supporting evidence.

Online checks also create practical traps. Employers must use the employer checking service or Home Office online service correctly; simply viewing information shown to the individual is not enough to create a statutory excuse. Home Office guidance also requires employers to retain the online profile page showing the photograph and date of check, securely, for the duration of employment and for two years afterwards.

Building a Right to Work System That Reduces Risk

A defensible system should make right to work compliance a condition of starting work. HR, recruitment teams and line managers should understand that business pressure cannot justify allowing an individual to begin before the correct check is complete.

Employers should allocate ownership of right to work compliance, train relevant staff, use a central record system, diarise visa expiry dates and audit files periodically. Where checks are decentralised across sites or business units, central oversight is particularly important.

A robust system should also identify when escalation is needed. Examples include pending applications, section 3C leave, technical problems with share codes, Student restrictions, sponsored workers, agency workers and individuals unable to generate online status evidence. Where the Employer Checking Service is required, a Positive Verification Notice may provide a time-limited statutory excuse, but only if obtained and retained correctly.

Responding to a Referral Notice or Civil Penalty Notice

If the Home Office issues a referral notice, the employer should immediately identify the individuals concerned, the alleged periods of illegal working and the checks carried out. The first question is whether a statutory excuse exists for each worker and each relevant period.

If a civil penalty notice is issued, the employer has 28 days to respond and that the notice will explain payment, next steps and how to object.

An objection should not simply assert that the business acted in good faith. It should engage with the legal test: what check was done, when, by whom, under which checking route, and what evidence was retained. Where the statutory excuse is incomplete, the response should address mitigation carefully and avoid unnecessary admissions before the facts are fully understood.

Employers should also manage immediate workforce risk. If the individual is still working and there is reason to believe they may not have the right to work, continuing employment may increase exposure. However, suspension or dismissal decisions should be handled fairly and without discriminatory assumptions.

Sponsor Licence and Wider Business Consequences

For sponsor licence holders, a civil penalty can have consequences beyond the financial penalty. It may prompt Home Office scrutiny of wider HR systems and can be relevant to sponsor licence compliance action. Even for non-sponsors, publication risk, reputational damage, procurement consequences and internal governance concerns may be significant. Business details may be published by Immigration Enforcement as a warning to other businesses.

Remediation After an Illegal Working Incident

Whether or not a penalty is reduced or cancelled, employers should treat the incident as a compliance warning. Useful remediation includes updating right to work policies, retraining staff, auditing active employee files, checking expiry-date controls, reviewing agency labour arrangements and documenting improvements.

Where the issue arose from a specific failure, such as Student working hours or missed follow-up checks, the remediation should address that weakness directly. A general policy update will rarely be persuasive if the operational control has not changed.

Contact Our UK Immigration Lawyers In Switzerland

If your organisation has received a Home Office referral notice or civil penalty notice, or if you need to strengthen your right to work systems, Richmond Chambers Switzerland’s specialist UK immigration lawyers can help assess statutory excuse evidence, prepare objections, advise on mitigation and review wider compliance risks, including sponsor licence implications. To arrange an initial consultation meeting, contact Richmond Chambers Switzerland by telephone on +41 21 588 07 70 or complete our enquiry form.

Frequently Asked Questions: UK Civil Penalties for Illegal Working

What is a civil penalty for illegal working?

A UK civil penalty for illegal working is a financial penalty imposed by the Home Office where an employer employs an adult who does not have the right to work in the UK and cannot show a statutory excuse. Liability can arise even where the employer did not deliberately breach immigration rules.

How Can Employers Establish a Statutory Excuse Against an Illegal Working Penalty?

Employers establish a statutory excuse by completing the correct right to work check before employment starts and retaining evidence in the required form. Where a worker has time-limited permission, a follow-up check must also be carried out shortly before the permission expires.

What Are the Most Common Right to Work Check Failures?

Common right to work failures include late onboarding checks, missed follow-up checks, using the wrong checking route, failing to check work restrictions and poor record retention. These errors can expose employers to civil penalties even where the worker appeared to have some form of immigration permission.

Do Employers Need to Carry Out Follow-Up Right to Work Checks?

Yes, follow-up right to work checks are required where an employee has time-limited permission to work in the UK. Employers should diarise expiry dates and complete the repeat check before permission expires to maintain a statutory excuse.

What Should Employers Do After Receiving a Home Office Civil Penalty Notice?

Employers should review the individuals named, the alleged periods of illegal working and the right to work checks carried out for each worker. Any objection should address the legal test, including what check was completed, when it was done, who carried it out and what evidence was retained.

Can a Civil Penalty Affect a Sponsor Licence?

Yes, a civil penalty for illegal working may trigger wider Home Office scrutiny and can be relevant to sponsor licence compliance action. Sponsor licence holders should assess both the immediate penalty position and any wider risks to their HR systems and sponsored worker compliance.

How Can Employers Reduce the Risk of Illegal Working Penalties?

Employers can reduce risk by making right to work compliance a condition of starting work, training staff, using centralised records, diarising visa expiry dates and auditing employee files. Systems should also identify cases requiring escalation, such as Student restrictions, share code problems, pending applications and Employer Checking Service checks.

This article summarises UK immigration law and guidance at the date of writing. Individual facts, evidence, cantonal handling and procedural posture may affect the outcome. It is provided for general information only and does not constitute legal advice.