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The Modern Slavery Act 2015 makes it a criminal offence to hold someone in slavery, servitude, or forced labour, or to arrange or facilitate human trafficking, and separately requires larger commercial organisations to publish an annual statement setting out the steps they've taken to prevent modern slavery in their business and supply chains.
Where this overlaps with sponsor licence duties
For UK employers who sponsor overseas workers, modern slavery compliance and sponsor licence compliance aren't separate boxes to tick — they're assessed together. Home Office compliance officers look for the same warning signs a modern slavery audit would flag: excessive recruitment fees charged to workers, restricted freedom of movement, confiscated documents, or pay that doesn't match the role sponsored. A sponsor found to be exploiting workers, even unintentionally through a third-party recruiter, risks both criminal exposure under the Act and licence suspension or revocation under sponsor duties.
Section 54 statements versus sponsor duties
The Section 54 transparency statement is a public disclosure obligation tied to turnover, not to holding a sponsor licence, but the two regimes reinforce each other in practice: a business honest enough to publish a credible modern slavery statement is generally the same business that's kept clean recruitment and right-to-work records. Genuine right-to-work checks, done properly through share code verification rather than taking documents at face value, are as much a modern slavery safeguard as an immigration one — both are designed to stop exploitation of workers whose status leaves them vulnerable.
What a statement should actually cover
A credible Section 54 statement is more than a compliance template. A statement that only reaches the legal minimum tends to read that way to anyone checking it, including a Home Office compliance officer forming a wider view of the organisation. Areas worth addressing properly, rather than skating over, include:
- The structure of the business and its supply chains, including where overseas recruitment sits within them
- The policies in place on slavery and trafficking
- Due diligence carried out on recruiters, agents, and labour providers used to source sponsored workers
- Where the business has identified risk, and how that risk is assessed and managed
- How effectiveness is measured, ideally against something more concrete than a policy simply existing on paper
- What training is given to staff involved in recruitment and people management
A statement built around genuine answers to each of these, rather than boilerplate language borrowed from a template, is also simply easier to defend if a compliance visit or an audit later asks what actually sits behind it.
Recruitment supply chain red flags
- A recruitment agent or intermediary charging candidates a fee to secure the sponsored role
- Workers arriving already in debt to a recruiter, agent, or the sponsor itself
- Living arrangements tied to the job in a way that limits a worker's ability to leave
- Inconsistent or implausible right-to-work documentation that hasn't been checked using an official share code
Any of these should trigger an internal review, not just a note on file — sponsor guidance is explicit that employers must not turn a blind eye to exploitation happening through a recruitment chain they use, even where a third party is technically responsible for the arrangement.
If you identify a possible victim: the National Referral Mechanism
Spotting one of the red flags above sometimes means encountering something more serious than an internal HR issue — a genuine indication that a worker is or has been a victim of trafficking or forced labour. In that situation, the appropriate route is the National Referral Mechanism, the UK's official framework for identifying and supporting potential victims of modern slavery, rather than an employer trying to resolve the situation unilaterally through dismissal, immigration reporting, or an internal disciplinary process. Referrals into the mechanism are generally made by designated first responder organisations rather than employers directly, so the practical step for a sponsor is usually to pause, take specialist advice, and avoid any action that could look like retaliation against the worker or an attempt to remove the problem by simply ending their sponsorship. Reporting the worker to the Home Office as a compliance issue before the possibility of exploitation has been properly assessed is a genuine risk in itself, both to the worker and to how a later compliance review of your own organisation reads the incident.
Evidencing genuine oversight
What a Home Office compliance visit and a modern slavery audit both want to see is the same thing: proof you actually checked, not just a policy document. That means dated right-to-work checks, records of who assigned each Certificate of Sponsorship, and a paper trail showing recruitment fees weren't passed to workers — all duties already covered under the sponsor duties and compliance guidance. Sponsors who treat enforcement visit readiness and modern slavery due diligence as one exercise, rather than two, tend to hold better evidence for both.
Training and internal ownership
Red flags are only useful if the people closest to recruitment and onboarding actually recognise them. Whoever manages relationships with recruitment agents, checks right-to-work documents, and processes new starters needs some real grounding in what modern slavery indicators look like in practice, not just a policy circulated once a year and filed away. Pairing this training with the same internal ownership used for sponsor licence duties, rather than treating it as a separate HR initiative, means the person reviewing a new agent relationship or an unusually large group of workers arriving through one recruiter is the same person alert to both sets of red flags at once.
FAQs
Does every sponsor need to publish a modern slavery statement?
No — the Section 54 duty applies to commercial organisations above a turnover threshold set out in the Act; smaller sponsors may not be legally required to publish one but are still bound by the underlying duty not to facilitate exploitation.
Can using a third-party recruitment agency shift liability away from the sponsor?
Not fully — sponsors remain responsible for the genuineness and legality of the roles and workers they sponsor even when a recruiter sourced the candidate, so due diligence on agents matters as much as due diligence on workers.
What should we do if we suspect a sponsored worker is a victim of modern slavery or trafficking?
Get specialist advice before taking any unilateral action, and consider a National Referral Mechanism referral through an appropriate first responder rather than resolving it as an internal HR or immigration matter. Ending the worker's sponsorship or reporting them to the Home Office without properly assessing the situation first risks compounding the harm, and reads very differently to a compliance officer than a case that was handled with proper care.
Does having a modern slavery statement protect our sponsor licence if problems are later found in our supply chain?
No — a statement is a transparency document, not a shield. If a compliance review finds that recruitment fees were charged to workers or that documents were confiscated, the fact that a statement was published doesn't offset that finding; what protects the licence is evidence that due diligence was genuinely carried out, not that a statement said it would be.
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