On 6 March 2026, the Home Office published a comprehensive update to the Workers and Temporary Workers: guidance for sponsors. These changes, which take effect immediately, affect all five core guidance documents, Part 1 (Apply for a licence), Part 2 (Sponsor a worker), Part 3 (Sponsor duties and compliance), Appendix D (Record-keeping duties), and Sponsor a Skilled Worker, as well as introducing a brand-new standalone Glossary.
This is not a routine housekeeping update. The March 2026 changes introduce new duties, redefine key concepts, and lower the threshold at which the Home Office can take enforcement action against sponsors. Below, we examine what has changed, what it means in practice, and what licence holders should be doing now.
A New Standalone Glossary
One of the most visible structural changes is the introduction of a separate Glossary document. Previously, definitions of key terms were scattered across Part 1 (and in some cases duplicated in Parts 2 and 3). The Home Office has now centralised all definitions in a single reference document, titled “Sponsor guidance (sponsored work routes): glossary, version 03/26.”
This is more than a tidying-up exercise. The new glossary introduces two particularly significant defined terms that sponsors must familiarise themselves with immediately.
The first is “eligible role.” This replaces the previous concept of “genuine vacancy” or “genuine employment” throughout the guidance. An eligible role is defined as a vacancy which the Home Office is satisfied:
- exists (or can reasonably be anticipated to exist) at the point a CoS is assigned;
- requires the jobholder to perform the specific duties, responsibilities and hours set out on the CoS;
- meets all Immigration Rules requirements for the route (including skill level and salary) and complies with National Minimum Wage and Working Time Regulations at all times; and
- is appropriate to the business or organisation in light of its business model, business plan and scale.
Critically, the Home Office must be satisfied the role will continue to meet these requirements throughout the duration of sponsorship, not just at the point a CoS is assigned.
The second notable term is “associated administrative costs.” While a definition of this term previously appeared in Part 1 at paragraph L6.18, it has been relocated to the glossary with an expanded list of examples. The definition now explicitly includes fees for sponsorship action plans, alongside the previously specified items: priority service fees, legal fees related to obtaining or maintaining the licence, and immigration advice or services where the worker did not have a genuine choice. Sponsors remain prohibited from recouping these costs from their sponsored workers.
The Burden of Proof: A Lower Threshold for Action
Perhaps the most consequential change across the guidance is the clarification of the burden of proof in sponsor licence decisions. The old guidance stated that the Home Office would “take compliance action when it is considered that a sponsor has failed” to discharge its responsibilities. The new guidance states the Home Office will “take appropriate compliance action if we reasonably suspect that a sponsor is failing, or has failed, to do so.”
This is a meaningful shift. The standard has moved from an established finding of failure to a reasonable suspicion. Moreover, the addition of “is failing” (present tense) alongside “has failed” (past tense) means the Home Office can now act on ongoing suspected non-compliance, it need not wait for a breach to be concluded.
This language is replicated across Part 1 (at L2.4), Part 3 (at C1.4 and C1.12), and in the Annexes to both documents. Sponsors should understand that this represents a lower evidential threshold for compliance action, suspension, and revocation.
Voluntary Membership and No Enforceable Rights
New paragraph L2.2 (Part 1) and C1.4 (Part 3) explicitly confirm three principles that, while arguably implicit in the old guidance, are now stated in express terms: (1) participation in the sponsorship scheme is voluntary and sponsors seek membership for their own benefit; (2) the granting of a licence is at the discretion of the Home Office; and (3) a sponsor licence creates no property or other enforceable right.
Part 3 goes further, stating the scheme provides for the Home Office to “act decisively, including the ability to revoke or suspend a licence, where there are reasonable grounds for suspecting that a breach of the sponsor guidance has occurred.”
This language is clearly intended to bolster the Home Office’s position in any legal challenges to licence revocation or suspension.
The Duty to Read All Guidance
New paragraphs L2.5 (Part 1) and C1.3 (Part 3) create an express obligation for both existing and prospective sponsors to read all parts of the sponsor guidance, including Parts 1, 2 and 3, all appendices, the glossary, and any relevant route-specific guidance, and to keep up to date with changes. This is now a formal duty. Sponsors cannot claim ignorance of the guidance as a defence to non-compliance.
Worker Rights and Welfare: A New Duty for Sponsors
Among the most impactful changes for day-to-day compliance is the introduction of a new worker rights and welfare subsection at L2.6–L2.7 (Part 1), paired with a new record-keeping duty at Section 5(l) of Appendix D.
The new L2.6 creates an obligation on sponsors to comply with UK employment law and to ensure that sponsored workers understand their employment rights. The guidance specifies that this includes but is not limited to: National Minimum Wage entitlement, Working Time Regulations compliance, pension auto-enrolment and opt-outs, statutory leave and pay, health and safety, trade union membership and participation, Equality Act duties, and how to raise grievances.
Crucially, the guidance directs sponsors to the Advisory, Conciliation and Arbitration Service (ACAS) website (www.acas.org.uk) as the primary source of information about these rights. ACAS provides comprehensive, free guidance on each of the above topics. For sponsors based in Northern Ireland, the Labour Relations Agency provides an equivalent service.
The new L2.7 goes a step further: sponsors must have HR systems or processes in place demonstrating that they provide this information to sponsored workers and must retain the evidence. Appendix D, Section 5(l) confirms what that evidence should look like, for example, copies of written information provided to workers (which could be included in the contract of employment), or records of training or awareness courses.
This is a practical change that requires immediate action. Sponsors who do not currently provide employment rights information to their sponsored workers, or who cannot evidence doing so, will need to implement systems to ensure compliance.
Right to Work Checks: Clarification for Sponsored Workers Not Directly Employed by the Sponsor
A notable change in Part 2 (at S1.40) is the addition of wording clarifying the scope of right to work checks.
The new wording reads:
“You must check that any worker you wish to employ or sponsor (including a worker who is not your direct employee) has permission to enter or stay in the UK and can do the work in question before they start working for you.”
It is important to read this precisely. The operative words are “any worker you wish to employ or sponsor.” The parenthetical clarification “(including a worker who is not your direct employee)” addresses the situation where the sponsor guidance permits a sponsor to sponsor a worker who is not their direct employee, for example, a worker employed by a related organisation under common ownership, or a worker engaged in a genuine self-employed capacity. In those cases, the sponsor’s right to work check obligation still applies, even though the worker is employed by another entity or is self-employed.
This does not, however, extend the obligation to non-sponsored, non-employed third parties — such as independent subcontractors who have no sponsorship or employment relationship with the licence holder. This interpretation is reinforced by Appendix D, Section 1, which is titled “Evidence of right to work for sponsored workers” and breaks the obligation down exclusively by reference to workers being sponsored by the licence holder.
What Should Sponsors Do Now?
- Read the full updated guidance. This is now a formal obligation, not merely best practice. All five updated documents and the new glossary are available on GOV.UK.
- Review your employment rights processes. Ensure you are providing sponsored workers with information about their employment rights and that you can evidence doing so. Consider using ACAS resources.
- Audit your CoS descriptions. Ensure that job descriptions and occupation codes on all current Certificates of Sponsorship accurately reflect the work being performed.
- Review right to work check procedures. If you sponsor workers who are not your direct employees (e.g., employed by a related entity or self-employed), confirm that your processes cover these arrangements.
- Familiarise yourself with the “eligible role” definition. Consider whether all roles you sponsor meet the four-part test.
- Take professional advice. Given the lower threshold for enforcement action, sponsors should not wait for a compliance visit to identify gaps.
Conclusion
The March 2026 update to the Workers and Temporary Workers sponsor guidance represents a significant shift in the UK’s sponsorship framework, introducing clearer definitions, new compliance duties, and a lower threshold for Home Office enforcement action. By centralising key terminology through the new glossary, strengthening expectations around worker welfare and employment rights, and clarifying obligations such as right to work checks and the concept of an “eligible role,” the updated guidance reinforces the Home Office’s focus on accountability and proactive compliance. For sponsor licence holders, these changes highlight the importance of reviewing internal HR systems, ensuring accurate sponsorship practices, and staying fully informed of the evolving regulatory framework. Organisations that act early to align their processes with the updated guidance will be better positioned to maintain compliance and safeguard their sponsor licence in an increasingly stringent regulatory environment.
