A civil penalty for employing someone without the right to work is set at up to £45,000 per illegal worker for a first breach, and up to £60,000 per illegal worker where the employer has breached before. Those are maximums rather than fixed fines. The Home Office works down from them using a published set of mitigating factors, and understanding that arithmetic is what separates a manageable penalty from a ruinous one.
Most employers only ever read the headline figures. The detail sits in the code of practice, and it rewards preparation done long before a visit.
Where the Figures Come From
The illegal working civil penalty scheme gives the Home Office power to issue a penalty where a person without the right to do the work in question was employed and no valid statutory excuse exists. The current maximums are £45,000 for a first breach and £60,000 for a repeat breach within a three year window.
The figure is per worker, not per notice. Five workers found during one visit at a first-breach employer is an exposure calculated against £225,000, not £45,000. This is the single most misunderstood feature of the regime and it is why volume employers carry disproportionate risk.
First Breach or Repeat Breach
The higher band applies where the employer has been issued with a penalty, or has been found liable, in respect of the same premises or business within the preceding three years. The reference point is the employer's own compliance history rather than the individual worker.
Group structures create genuine complexity here. Whether a penalty against one entity pulls a sister company into repeat-breach territory depends on the corporate facts, and it is worth establishing the position before you need it rather than during a dispute.
How the Amount Is Reduced
The Home Office starts at the maximum and applies reductions where specified factors are present. The factors reward cooperation and partial compliance rather than good intentions.
Reporting Suspected Illegal Workers
An employer who reported the suspicion to the Home Office before enforcement action receives credit. This is only available to employers who actually notice, which in turn depends on someone reviewing the workforce rather than assuming the file is fine.
Active Cooperation
Cooperating with the investigation attracts a reduction. Producing records promptly and completely is the practical expression of this. An employer who cannot locate its own check evidence for two weeks is not cooperating, whatever its intentions.
Effective Document Checking Practices
Credit is available where the employer can show it operates effective checking practices generally, even though it failed in the instance under investigation. A documented, consistently applied process with evidence of training carries weight here. An undocumented process that someone describes verbally does not.
The Warning Notice Route
Where no penalty has been issued in the previous three years and all of the mitigating factors are present, the outcome can be a warning notice rather than a financial penalty. It is the best available result short of holding a statutory excuse, and only employers who prepared can reach it.
The Statutory Excuse Beats All of This
Mitigation reduces a penalty. A statutory excuse prevents one. If a prescribed check was carried out correctly before the work began and the evidence was retained properly, no civil penalty is payable even if the person did not in fact have the right to work.
The excuse fails in a small number of recurring ways, and they are almost always process failures rather than judgement failures.
- The check was done after work started.
- A share code was accepted without completing the online check and comparing the photograph.
- A document was viewed over video, or a photocopy was filed, where a manual check required the original in the person's presence.
- A follow-up check on time-limited permission was missed.
- The evidence existed once but cannot now be produced.
The last of these is the quiet killer. Retention should run for the duration of the engagement and two years beyond it, in a form that survives staff turnover and system migration.
The Criminal Offence Sitting Alongside
The civil penalty is a no-fault mechanism. Separately, knowingly employing a person without the right to work, or employing them having reasonable cause to believe it, is a criminal offence carrying a custodial sentence and an unlimited fine.
The phrase "reasonable cause to believe" is doing a lot of work. Ignoring an obvious signal, or instructing someone not to ask questions, moves the exposure out of the civil scheme entirely. Documented curiosity is safer than convenient silence.
The Consequence Nobody Budgets For
For sponsor licence holders, a civil penalty can trigger licence revocation, and revocation means sponsored workers must stop work. A penalty of £45,000 against a business employing forty sponsored professionals is not a £45,000 event.
Other collateral consequences follow. Penalties are published in Home Office transparency data. Directors can face disqualification proceedings in serious cases. Premises licences can be affected in licensed trades. Public sector framework agreements frequently require self-reporting of enforcement action, and some treat it as grounds for exclusion.
Why 1 October 2026 Changes the Arithmetic
Penalty levels are not changing. The number of engagements they attach to is. Section 48 of the Border Security, Asylum and Immigration Act 2025 extends the scheme to workers engaged under a worker's contract, individual sub-contractors and online matching services, and extends liability up contractual chains.
An employment business supplying two hundred temporary workers has, from that date, two hundred engagements inside the scheme rather than only its own PAYE staff. The maximum has not moved. The multiplier has.
Objecting and Appealing
A penalty notice sets out the amount, the reasons and the payment deadline. There is a right to object to the Home Office, and then a right of appeal to the county court, within the periods stated in the notice. Objecting can result in the penalty being cancelled, reduced, increased or maintained.
The practical advice is unglamorous. Diarise the deadlines the moment a notice arrives, gather the check evidence before drafting anything, and get specialist advice early. A faster payment option reducing the amount is usually available, which creates a real tension between accepting a discount and preserving an argument. That decision needs legal input, not a finance decision taken in isolation.
Frequently Asked Questions
Is the Penalty Per Worker or Per Business?
Per worker. Each individual found without the right to work attracts its own penalty calculation, and multi-worker findings escalate accordingly.
Does a Penalty Against One Site Affect Our Other Sites?
The repeat breach test looks at the employer, and at the same premises or business, within three years. Multi-site operators should assume a finding at one location affects the banding position elsewhere and take advice on their structure.
Can We Be Penalised If the Worker Lied to Us?
Yes, if no valid check was carried out. That is precisely the situation the statutory excuse exists to cover. Where a correct check was done on a convincing forgery, the excuse protects you.
Do Penalties Apply to Agency Workers?
From 1 October 2026 the scheme extends to workers under a worker's contract and to individual sub-contractors, so agency supply sits inside it. Which party carries liability depends on the chain and the checks actually performed.
How Long Does the Home Office Have to Act?
Enforcement typically follows a visit or an information-sharing referral, and there is no comfort in the passage of time. Records should be retained on the basis that they may be needed years after an engagement ends.
What to Do With This
The economics favour prevention by an enormous margin. A documented, uniformly applied checking process with retrievable evidence does three things at once. It creates statutory excuses that stop penalties outright. Where something slips through, it evidences the effective practices that reduce the amount. And it produces exactly the audit trail that clients and framework bodies now ask for.
Employers who treat the check as paperwork discover the cost of that view all at once. The arithmetic above is unforgiving, and it is entirely avoidable.
This article is general information, not legal advice. Penalty levels and the mitigating factors are set by the Home Office and can change. Take specialist immigration advice on your circumstances.
Sources
Home Office. Code of Practice on Preventing Illegal Working: Right to Work Scheme for Employers.
https://www.gov.uk/government/publications/right-to-work-checks-employers-guide
GOV.UK. Checking a Job Applicant's Right to Work.
https://www.gov.uk/check-job-applicant-right-to-work
Home Office. Draft Employer's Guide to Right to Work Checks: 16 July 2026.
https://www.gov.uk/government/publications/right-to-work-checks-employers-guide/draft-employers-guide-to-right-to-work-checks-16-july-2026-accessible
The Stationery Office. Border Security, Asylum and Immigration Act 2025, Section 48.
https://www.legislation.gov.uk/ukpga/2025/31/section/48
Home Office. Migration Transparency Data.
https://www.gov.uk/government/collections/migration-transparency-data
Home Office. Workers and Temporary Workers: Guidance for Sponsors.
https://www.gov.uk/government/collections/sponsorship-information-for-employers-and-educators
GOV.UK. Employer Checking Service: Request a Right to Work Check.
https://www.gov.uk/employee-immigration-employment-status
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