Can Employees Keep Working After a Sponsor Licence is Revoked? The Curtailment Letter Trap

One of the most common and risky questions employers may face after sponsor licence revocation is this:

Can sponsored workers continue working if the employer's sponsor licence has been revoked, but no curtailment letter has been received from the Home Office?

This is a dangerous area for employers to manage informally.

A delayed curtailment letter should not be treated as reassurance that work can continue. Where a sponsor licence is revoked, the worker's sponsorship will usually come to an end, even if formal curtailment correspondence has not yet arrived. While the worker may still have time to regularise their immigration position, seek a new sponsor, or make a different application, that does not automatically mean they can continue working for the employer whose sponsor licence has been revoked.

For employers, this creates serious HR, payroll, right-to-work and compliance risks. It can also place sponsored workers in a vulnerable position, particularly where they are being asked to continue working without clear confirmation of their employment status, proper pay, or access to specialist advice.

At Success HR Advisory, we are seeing increasing concerns around situations where employers continue to offer work to sponsored workers after sponsor licence revocation. In some cases, this appears to stem from confusion or a poor understanding of the rules. In others, the circumstances raise much more serious concerns around exploitation, underpayment and weak workforce governance.

This is not just an immigration issue. It is a people risk, governance risk and reputational risk issue.

What happens when a sponsor licence is revoked?

When an employer loses its sponsor licence, the consequences can be significant for both the business and the sponsored worker.

The worker's Certificate of Sponsorship will usually be cancelled, and their visa may be limited to 60 days, or less if their visa has fewer than 60 days remaining. This means the worker may have a short period of time to secure alternative sponsorship, make a different immigration application, or leave the UK.

For the employer, sponsor licence revocation is a serious compliance event. It may indicate that the organisation has failed to meet its sponsor duties, maintain appropriate HR systems, keep accurate records, report relevant changes, or comply with wider employment and immigration requirements.

From an HR perspective, it can also create complex issues involving:

• employment status;
• pay and final payments;
• contractual obligations;
• right-to-work checks;
• payroll records;
• communication with affected workers;
• notice and termination processes;
• grievance or whistleblowing concerns; and
• potential employment claims.

Employers should not treat sponsor licence revocation as a technical immigration issue only. It often exposes wider weaknesses in workforce governance and people risk management.

The curtailment letter myth: a dangerous compliance trap

One practical issue employers may notice is that curtailment letters are not always issued immediately after a sponsor licence is revoked. In some cases, workers may not receive formal curtailment correspondence for some time, and their existing visa may appear to remain valid until it naturally expires.

However, employers should not mistake administrative delay for permission to continue as normal.

Where a sponsor licence is revoked, the worker's sponsorship will usually come to an end. While the worker may be given a limited period to remain in the UK, usually up to 60 days or until their visa expires if sooner, this does not mean they can continue working for the original sponsor.

This is a key distinction.

A worker may still have time to regularise their immigration position, seek a new sponsor or make a different application, but that does not automatically preserve their right to continue working for the employer whose sponsor licence has been revoked.

Continuing to offer shifts during this period can create serious right-to-work, payroll, illegal working, compliance and worker protection risks. It may also place the worker in a more vulnerable position, particularly if they are being asked to continue working without clear confirmation of their employment status, proper pay, or access to specialist advice.

The safest approach is to stop, verify and document. Employers should urgently review the worker's right-to-work position, check any Home Office correspondence, consider using the Employer Checking Service where appropriate, and obtain specialist immigration advice before allowing any work to continue.

The key point is simple: a delayed curtailment letter should never be treated as a compliance comfort blanket.

Compliance scrutiny is increasing

Sponsor licence compliance is no longer something employers can afford to manage informally or only review when a Home Office visit is expected.

The Home Office expects sponsors to maintain accurate records, comply with reporting duties, monitor sponsored workers and retain evidence demonstrating that sponsor duties are being met. This includes records relating to right-to-work checks, contact details, absences, salary, job role, working arrangements and changes in employment.

Salary compliance is also under increasing scrutiny. Employers should ensure that sponsored workers are being paid in line with the salary stated on the Certificate of Sponsorship and the relevant immigration rules. Payroll records, HR records and sponsor management records should be consistent.

This matters because many sponsor licence issues are not caused by one isolated error. They are often the result of weak systems, poor record keeping, inconsistent payroll practices, unclear management responsibilities or a lack of internal ownership.

Employers should also be aware of the increasing focus on sponsored workers' employment rights. Sponsors are expected to retain evidence that sponsored workers have been given information about their UK employment rights. This means employers should be able to show that workers have been informed about matters such as lawful pay, working time, statutory leave, health and safety protections, and how to raise concerns.

In practice, sponsor compliance and HR compliance must work together. Employers cannot separate immigration compliance from payroll, contracts, working time, right-to-work checks, grievance routes, record keeping and employee communication.

Confusion, poor compliance or exploitation?

In our experience, the reasons employers continue to provide work after sponsor licence revocation tend to fall into two broad categories.

The first is confusion or poor compliance. Some employers genuinely do not understand the implications of sponsor licence revocation. They may not know what happens to existing sponsored workers, when employment should cease, what communication is required, or what payments remain due. In some cases, they may confuse suspension with revocation, or assume they can continue as normal while matters are being resolved.

The second category is more concerning. In some cases, the employer appears to continue benefiting from the worker's labour while avoiding proper responsibility for pay, employment rights or compliance. This may involve giving the individual shifts, asking them to continue working informally, reducing pay, delaying wages, or suggesting that the worker's immigration position justifies poorer treatment.

That is where the issue moves beyond poor administration and begins to raise serious ethical and legal concerns.

The contradiction employers must avoid

One of the most concerning patterns is where an employer tells a worker that they can no longer be properly employed because the sponsor licence has been revoked, but at the same time continues to offer them work.

That creates a clear contradiction.

If the employer's position is that the worker can no longer continue in employment because of the licence revocation, the organisation cannot then continue to benefit from that person's labour while paying them less, paying them informally, or avoiding normal payroll and employment obligations.

In one case supported by Success HR Advisory, a worker had continued to be offered work for several months after the employer's sponsor licence had been revoked, while not receiving their full contractual pay. When challenged, the employer's explanation was that they had lost their licence and therefore could not continue employing the individual. Yet in practice, the worker was still being given work and the employer was still benefiting from that work.

That type of situation creates obvious concerns. It may point to unlawful deductions from wages, minimum wage risks, breach of contract, right-to-work concerns, poor record keeping, and in more serious cases, potential indicators of labour exploitation.

The worker is often in a vulnerable position

Sponsored workers can be particularly vulnerable when a sponsor licence is revoked. They may be worried about losing their job, losing their visa, being unable to pay rent or support family members, or having to leave the UK.

This power imbalance can make it difficult for workers to challenge poor treatment. Some may continue working because they feel they have no other option. Others may not understand their rights, may fear reporting the employer, or may believe that any challenge could make their situation worse.

This is why employers must take particular care. A sponsor licence problem should never be used as leverage to reduce pay, avoid proper process, or place pressure on workers who are already in an uncertain position.

Key HR and compliance risks for employers

Where an employer continues to offer work after sponsor licence revocation, the risks can be significant. These may include:

• unlawful deduction from wages claims;
• national minimum wage compliance issues;
• breach of contract claims;
• right-to-work and illegal working risks;
• inaccurate payroll and tax records;
• failure to maintain proper HR records;
• whistleblowing or detriment claims;
• discrimination risks, particularly where migrant workers are treated less favourably;
• modern slavery or labour exploitation concerns;
• reputational damage; and
• further regulatory scrutiny.

For regulated sectors such as care, the risks can be even greater. Poor workforce governance may also raise concerns about leadership, safe staffing, provider oversight, and the organisation's wider compliance culture.

What responsible employers should do

Where a sponsor licence has been suspended or revoked, employers should act quickly and carefully. This is not a situation to manage informally or reactively.

As a starting point, employers should:

• Take specialist immigration advice immediately: Sponsor licence issues can be complex, and employers should obtain advice from an appropriately qualified immigration adviser or solicitor.
• Review the position of all affected workers: Employers should identify who is affected, what visa route they are on, what role they are performing, and what communications have been received from the Home Office.
• Stop informal working arrangements: Employers should not continue offering work “off the books”, outside payroll, or without clear confirmation of the worker's right to work.
• Check right-to-work status before allowing work to continue: Where there is uncertainty, employers should not rely on assumptions. They should verify the position carefully, consider using the Employer Checking Service where appropriate, and document the steps taken.
• Ensure all wages and contractual payments are made: Licence revocation does not remove the employer's responsibility to pay workers properly for work already performed.
• Communicate clearly and sensitively: Workers should be given clear information about their employment position, signposted to appropriate advice, and treated with dignity throughout the process.
• Keep proper records: All decisions, communications, payments, right-to-work checks and advice received should be documented.
• Review wider HR and compliance systems: A licence revocation often points to deeper governance issues. Employers should review their HR files, reporting processes, contracts, payroll records, absence records, working hours, recruitment practices, sponsor management systems and evidence that workers have been informed of their employment rights.
• Consider worker welfare and safeguarding risks: Sponsored workers may be anxious about their immigration position, income, housing, family responsibilities and future employment. Employers should ensure communications are handled sensitively, workers are not placed under pressure, and any potential indicators of exploitation, coercion or vulnerability are escalated appropriately.

This is a governance issue, not just a technical breach

Sponsor licence compliance should not be viewed as a box-ticking exercise. It sits within a much wider framework of responsible employment.

An employer that sponsors migrant workers has significant responsibilities. Those responsibilities include not only meeting Home Office requirements, but also ensuring that workers are treated lawfully, fairly and ethically.

Where things go wrong, the question is not only “what did the Home Office require?” but also:

• Were workers paid correctly?
• Were they treated fairly?
• Were they given accurate information?
• Were employment records properly maintained?
• Did managers understand their responsibilities?
• Was payroll consistent with the sponsored role and salary?
• Were right-to-work checks properly completed and retained?
• Were sponsored workers given information about their employment rights?
• Was there any indication that workers were being placed under pressure?
• Did the organisation respond quickly and responsibly once problems were identified?

These are HR governance questions, and they matter.

Frequently asked questions

Can a sponsored worker keep working if the sponsor licence has been revoked but no curtailment letter has arrived?

Employers should not assume that work can continue simply because a curtailment letter has not been received. Where a sponsor licence is revoked, the worker's sponsorship will usually come to an end, and employers should take specialist immigration advice before allowing any work to continue.

Does a delayed curtailment letter mean the worker still has the right to work?

Not necessarily. A delayed curtailment letter may mean the worker has not yet received formal confirmation about the shortening of their visa, but it should not be treated as permission to continue working for the original sponsor. Employers should verify the position carefully and seek specialist advice.

What should an employer do immediately after sponsor licence revocation?

The employer should identify all affected workers, review their right-to-work position, stop any informal working arrangements, obtain specialist immigration advice, communicate carefully with workers, pay all wages due, and keep a clear record of all decisions and advice received.

Can sponsor licence revocation create illegal working risks?

Yes. Continuing to offer work after sponsor licence revocation can create serious right-to-work and illegal working risks, particularly where the employer assumes work can continue because no curtailment letter has been received.

Does sponsor licence revocation remove the employer's responsibility to pay wages?

No. Employers remain responsible for paying workers properly for work already performed. Licence revocation should not be used as a reason to withhold wages, reduce pay, delay payment, or move work outside normal payroll processes.

Final thoughts

Sponsor licence revocation can create serious disruption for employers and workers. However, it should never create a grey area where workers continue providing labour without proper pay, proper process or proper protection.

For employers, the message is clear: if your sponsor licence is suspended or revoked, do not manage the situation informally. Take advice, review the workforce position, communicate carefully, pay workers properly, and make sure your HR and compliance records are in order.

A delayed curtailment letter should not be treated as reassurance that work can continue. Employers should take a risk-based, evidence-led approach and seek specialist advice before making decisions that could affect the worker's immigration position, employment rights or future prospects.

For organisations that rely on sponsored workers, prevention is always better than crisis management. Strong HR systems, accurate records, compliant payroll practices, clear reporting processes and regular workforce audits can make a significant difference.

At Success HR Advisory, we support employers with HR compliance audits, employment documentation, workforce governance and people risk management. We help organisations identify gaps before they become serious operational, legal or reputational issues.

If your organisation sponsors migrant workers, now is the time to review whether your HR and compliance systems are strong enough to withstand scrutiny.

Disclaimer: This article is for general HR information only and does not constitute legal or immigration advice. Employers should seek specialist advice on sponsor licence and immigration matters.