To successfully navigate UK sponsorship, an employer must first secure a sponsor licence from the Home Office by proving organisational legitimacy and compliance capabilities, while the prospective employee must subsequently satisfy the points-based criteria under the Skilled Worker route. Sponsoring workers requires matching genuine, eligible vacancies at RQF Level 3 or above with compliant minimum salary thresholds, assigning the correct Certificate of Sponsorship, and meeting strict ongoing reporting and record-keeping duties. Both parties must execute their respective legal responsibilities precisely to avoid licence revocation for the business or visa refusal for the worker.
The UK Sponsorship Framework: How the System Operates
The UK points-based immigration system relies on a principle of shared responsibility between licensed employers and the Home Office. Under this model, the Home Office delegates the preliminary vetting of overseas labour to UK-based organisations. In return for the privilege of recruiting international workers, employers accept substantial statutory duties. The system is split into two distinct, sequential phases: the organisational licensing stage and the individual worker application stage.
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| 1. SPONSOR LICENCE PHASE |
| UK Business -> Proves trading, systems & key personnel -> Gets Licence |
+------------------------------------+------------------------------------+
|
v
+-------------------------------------------------------------------------+
| 2. COS ISSUANCE PHASE |
| Licence Holder -> Verifies job/salary & assigns Defined/Undefined CoS |
+------------------------------------+------------------------------------+
|
v
+-------------------------------------------------------------------------+
| 3. WORKER VISA PHASE |
| Applicant -> Proves identity, English (B1), funds & points -> Gets Visa|
+------------------------------------+------------------------------------+
|
v
+-------------------------------------------------------------------------+
| 4. ONGOING COMPLIANCE |
| Sponsor tracks attendance, reports changes within 10 days, retains docs|
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A UK business cannot hire an international worker who requires visa sponsorship without holding a valid sponsor licence under the appropriate route, most commonly the Skilled Worker or Senior or Specialist Worker (Global Business Mobility) routes. Once licensed, the employer assesses whether a role qualifies for sponsorship, ensures the proposed remuneration meets statutory pay baselines, and assigns a Certificate of Sponsorship (CoS) to the chosen candidate. The candidate uses this reference number to apply for entry clearance or permission to stay.
The Legal Nature of a Certificate of Sponsorship
A Certificate of Sponsorship is not a physical paper certificate; it is a digital record generated within the Home Office Sponsorship Management System (SMS). Assigning a CoS acts as an official declaration by the sponsor that the job meets the mandatory skill level, that the worker will receive at least the stated salary, and that the vacancy is genuine. Assigning a CoS does not guarantee a visa grant. UK Visas and Immigration (UKVI) caseworkers independently assess whether the applicant satisfies all individual immigration criteria, including criminality thresholds, financial requirements, and English language proficiency.
Defined versus Undefined Certificates of Sponsorship
Certificates of Sponsorship are divided into two categories based on where the prospective employee is applying from:
- Defined CoS: Required for candidates who are currently outside the UK and will make an entry clearance application. Sponsoring employers must submit an individual application to UKVI via the SMS for each Defined CoS needed, specifying the job role, Standard Occupational Classification (SOC) code, working hours, and exact salary. UKVI must approve this request before the certificate can be assigned to the worker.
- Undefined CoS: Required for workers who are already inside the UK with valid leave and are eligible to switch into the Skilled Worker route, or for existing sponsored employees applying for an extension or change of employment. Employers request an annual allocation of Undefined CoS through the SMS and can assign them directly from their approved balance without seeking prior case-by-case approval from UKVI.
Assigning an Undefined CoS to an individual who requires a Defined CoS (an overseas applicant) is a severe breach of sponsor guidance. It results in the mandatory refusal of the worker's visa application and puts the employer's sponsor licence at immediate risk of suspension or revocation.
Employer Phase 1: Applying for a Sponsor Licence
Before recruiting international talent, a UK organisation must apply for a sponsor licence under Appendix Sponsor Licences of the Immigration Rules. This process tests whether the business is genuine, operating lawfully within the UK, and capable of fulfilling its administrative and monitoring duties.
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| LICENCE APPLICATION STEPS |
| |
| 1. Appoint Key Personnel (Authorising Officer, Key Contact, Level 1) |
| 2. Collate minimum 4 mandatory documents under Appendix A |
| 3. Submit online application and pay fee (Small: £574 / Large: £1,579) |
| 4. Email certified supporting evidence within 5 working days |
| 5. Accommodate potential pre-licence Home Office compliance visit |
| 6. Receive licence approval (Rating A) and access to SMS portal |
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Eligibility Criteria and the Genuine Business Test
To be eligible for a Skilled Worker sponsor licence, the applying entity must demonstrate that:
- It is a genuine organisation operating lawfully in the UK, holding all necessary statutory registrations, permissions, and corporate bank accounts.
- It is honest, dependable, and reliable, with no history of unspent immigration offences, financial misconduct, or directors disqualified under company law.
- It can offer genuine employment meeting the requisite skill level (RQF Level 3 or higher) and minimum salary thresholds.
- It possesses robust Human Resources (HR) and recruitment systems capable of monitoring sponsored personnel, tracking visa expiries, and alerting UKVI to reportable events within mandatory statutory windows.
If the Home Office suspects an organisation was established purely to facilitate the immigration of specific individuals without operating a legitimate commercial footprint, the application will be refused under the genuine business test.
Appointing Key Personnel
The sponsor licence application requires named individuals to hold specific administrative roles within the SMS. These individuals must be based in the UK and undergo background checks against Home Office criminality and immigration databases.
- Authorising Officer (AO): The most critical role. The AO must be a senior, competent person within the organisation responsible for the actions of all staff who use the SMS. The AO oversees compliance, ensures licence duties are met, and carries ultimate legal responsibility for the licence.
- Key Contact: The main point of contact between UKVI and the business. This person receives legal notices, audit requests, and operational queries.
- Level 1 User: The administrative user responsible for day-to-day management of the licence via the SMS portal. This user requests allocations, assigns CoS, reports worker changes, and updates company details. At least one Level 1 User must be an employee, partner, or director at the time of the initial application.
- Level 2 User: An optional, restricted user who can assign CoS and report certain changes, but cannot request licence changes, add other users, or apply for CoS allocations.
Except in limited circumstances involving legal representatives approved under UK law, the Authorising Officer and initial Level 1 User must be genuine employees or office holders of the applicant company. If the appointed Authorising Officer has an unspent conviction for an immigration offence or fraud, the licence application will be refused automatically.
Appendix A Evidence Requirements
Organisations must submit a minimum of four distinct supporting documents selected from Appendix A of the sponsor guidance, unless exempt as a public body or listed company on the London Stock Exchange. The documentation must prove the operational footprint of the business.
- Mandatory Corporate Bank Statement: A UK business bank account statement with a bank regulated by the Financial Conduct Authority (FCA), showing regular commercial transactions.
- Employer's Liability Insurance: Proof of current cover to a minimum of £5,000,000 from an authorised insurer.
- HMRC Registrations: Proof of registration with HMRC for PAYE and National Insurance, accompanied by recent RTI (Real Time Information) submissions.
- VAT Registration Certificate: Confirmation of registration with HMRC for Value Added Tax, where trading exceeds statutory turnover thresholds.
- Premises Evidence: Commercial lease agreements, freehold titles, or municipal business rates demands demonstrating a physical operating base in the UK.
- Audited Accounts: Latest audited or unaudited annual accounts showing trading performance, signed by a registered accountant.
All documents must be digital copies submitted by email within five working days of the online application form submission. Failure to supply compliant documents within this window leads to rejection without substantive consideration.
Pre-Licence Compliance Audits
UKVI may dispatch compliance officers to conduct an unannounced or announced pre-licence compliance visit before determining an application. During an audit, officers assess:
- Whether the business premises exist, are accessible, and are suitable for the scale of trading described.
- The adequacy of HR processes to track worker contact details, right to work statuses, and absences.
- How the business plans to recruit sponsored workers and whether vacancies are genuine.
- The knowledge of the Authorising Officer regarding their reporting and record-keeping responsibilities.
If the compliance audit reveals inadequate HR infrastructure, an inability to explain sponsor obligations, or unverified vacancies, the application will be refused. The business may face a six-month cooling-off period before it can reapply.
Employer Phase 2: Sponsor Management and Compliance Duties
Securing a sponsor licence is not a one-off administrative exercise. A licensed sponsor must maintain continuous compliance across its entire workforce throughout the life of the licence. A failure to comply can lead to an operational audit, licence downgrading, suspension, or outright revocation.
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| MANDATORY REPORTING TIMELINES |
| |
| WITHIN 10 WORKING DAYS: |
| - Sponsored worker fails to start on the agreed date |
| - Sponsored worker is absent for >10 consecutive days without leave |
| - Employment is terminated (resignation, dismissal, redundancy) |
| - Salary decreases or job title/core duties significantly change |
| - Worker switches to an immigration route not requiring sponsorship |
| |
| WITHIN 20 WORKING DAYS: |
| - Change of business name, trading address, or branch locations |
| - Change of ownership, merger, acquisition, or takeover |
| - Business enters administration, insolvency, or ceases trading |
| - Substantial change to appointed Key Personnel (AO, Level 1 User) |
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Appendix D Record-Keeping Obligations
Sponsors must retain detailed documentation for every sponsored employee as specified in Appendix D of the sponsor guidance. These records must be maintained throughout the worker's sponsorship and for a minimum of one year after sponsorship ends (or until a Home Office compliance officer has examined and approved them). Key records include:
- Right to Work Checks: Timestamped copies of statutory online share code checks or manual document checks completed before employment commenced.
- National Insurance Documentation: Proof of the worker's National Insurance number (e.g. payslips, HMRC documentation, or P45/P60).
- Absence Tracking: Complete records of all sickness, annual leave, compassionate leave, and unauthorised absences.
- Salary and Payroll Records: Payslips and corresponding corporate bank transaction logs showing net transfers matching gross contractual obligations.
- Contract and Job Description: Fully executed contracts of employment detailing standard hours, working locations, and precise job descriptions aligned with the assigned SOC code.
- Recruitment History: Evidence of how the worker was recruited, including interview notes, candidate shortlists, and advertisements (even though the formal Resident Labour Market Test is no longer mandatory, this proves the vacancy is genuine).
- Professional Registrations: Copies of any mandatory professional licences, accreditations, or certificates required to practice the profession legally in the UK (such as GMC, NMC, or SRA registrations).
Consequences of Licence Sanctions
If UKVI suspects or identifies a breach of duties, it may take regulatory action:
- Downgrading from A-Rating to B-Rating: If minor compliance failures occur, UKVI will issue a B-rating and implement a time-limited Sponsor Action Plan. The employer must pay an action plan fee and resolve all deficiencies within three months. During this period, the sponsor cannot issue new Certificates of Sponsorship.
- Licence Suspension: If serious breaches are identified, such as paying workers below minimum thresholds or employing illegal workers, the licence is suspended pending an investigation. The employer has 20 working days to submit written representations.
- Licence Revocation: If representations are rejected or critical breaches are confirmed, the licence is revoked. The employer cannot apply for a new licence for at least twelve months (or longer if civil penalties are unpaid). All currently sponsored workers will have their permission to stay curtailed to 60 calendar days, forcing them to find a new sponsor or leave the UK.
Salary Thresholds and Job Eligibility Rules
For an individual to qualify for a Skilled Worker visa, the prospective employment must satisfy two fundamental conditions: it must fall under an eligible Standard Occupational Classification (SOC) code at RQF Level 3 or higher, and the gross annual salary must equal or exceed both the general threshold and the specific occupation "going rate".
Standard Skilled Worker Salary Rules
For Certificates of Sponsorship assigned under the standard Skilled Worker rules on or after 4 April 2024, the baseline salary rules are:
- General Salary Threshold: £38,700 gross per year.
- Occupation Going Rate: The 50th percentile (median) full-time wage for the designated SOC 2020 code, based on official UK Annual Survey of Hours and Earnings (ASHE) data.
- Hourly Rate Floor: Sponsoring employers must ensure the worker's gross hourly wage meets or exceeds £15.88 per hour, irrespective of whether the annual gross exceeds £38,700.
The applicable salary requirement is always the higher of the general threshold or the occupation-specific going rate. An employer cannot adjust full-time equivalent baselines by requiring excessive working hours; going rates are calculated based on a standard 37.5-hour working week and must be pro-rated upwards if contractual hours are higher.
Tradeable Points and Permitted Salary Discounts
Applicants may earn tradeable points to qualify on a reduced salary if they satisfy specific statutory criteria under Appendix Skilled Worker. The general threshold and going rate are discounted according to the specific tradeable points option utilised:
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| TRADEABLE SALARY DISCOUNTS |
| |
| STANDARD APPLICANTS: |
| - No discount: Higher of £38,700 or 100% of occupation going rate |
| |
| NEW ENTRANTS (Under 26, switching from Student/Graduate, etc.): |
| - 30% general discount: Higher of £30,960 or 70% of going rate |
| |
| RELEVANT STEM PHD: |
| - 20% general discount: Higher of £30,960 or 80% of going rate |
| |
| RELEVANT NON-STEM PHD: |
| - 10% general discount: Higher of £34,830 or 90% of going rate |
| |
| IMMIGRATION SALARY LIST (ISL): |
| - Salary floor discount: Higher of £30,960 or 100% of going rate |
+-------------------------------------------------------------------------+
- New Entrants: Individuals who are under 26 years of age on the date of application, those switching from Student or Graduate visas, or those working towards recognised professional qualifications in chartered professions. The salary must equal or exceed £30,960 per year and 70% of the occupation going rate. The maximum aggregate duration a worker can hold permission as a New Entrant across all work routes is four years.
- Relevant PhD Qualifications: An applicant holding a UK PhD or equivalent international qualification relevant to the role can be paid a reduced rate. If the PhD is in a non-STEM subject, the salary must be at least £34,830 and 90% of the going rate. If the PhD is in a Science, Technology, Engineering, or Mathematics (STEM) discipline, the minimum salary is £30,960 and 80% of the going rate.
- Immigration Salary List (ISL): Roles designated on the official Immigration Salary List qualify for a reduced general threshold of £30,960 per annum, though the employer must still pay 100% of the occupation's going rate.
Health and Care Worker Visa Concessions
Roles falling under qualifying health and adult social care SOC codes benefit from lower salary thresholds:
- General Threshold: £29,000 gross per year.
- Occupation Going Rate: Calculated against the 25th percentile (lower quartile) of ASHE earnings data or national NHS Pay Bands, rather than the standard 50th percentile.
- Hourly Rate Floor: £11.90 per hour.
Individual care providers must be registered with the Care Quality Commission (CQC) in England (or equivalent territorial regulators in Scotland, Wales, and Northern Ireland) to sponsor care workers (SOC 6135) or senior care workers (SOC 6136). Individuals sponsored under these specific care codes cannot bring dependants to the UK.
Comprehensive Salary and Route Comparison
| Route / Category | General Salary Threshold | Going Rate Standard | Minimum Hourly Floor | Tradeable Reductions Available | Dependant Sponsorship Permitted |
|---|---|---|---|---|---|
| Standard Skilled Worker | £38,700 | 50th percentile (Median) | £15.88 | New Entrant (£30,960), PhD (£30,960/£34,830), ISL (£30,960) | Yes |
| Immigration Salary List (ISL) | £30,960 | 100% of standard going rate | £15.88 | General threshold reduced, going rate remains full | Yes |
| Health and Care Worker | £29,000 | 25th percentile (Lower quartile) | £11.90 | National NHS pay scales override generic going rates | Yes (Excluding SOC 6135 and 6136) |
| Transitional Skilled Worker (Pre-4 April 2024 cohorts) | £29,000 | 25th percentile (Lower quartile) | £11.90 | Available for extensions, changes of sponsor, and ILR until 2030 | Yes |
| Senior / Specialist Worker (Global Business Mobility) | £48,500 | 100% of occupation going rate | N/A | None (Must meet higher of threshold or going rate) | Yes |
Employer Phase 3: Requesting and Assigning a Certificate of Sponsorship
Assigning a Certificate of Sponsorship requires careful administrative preparation. Sponsoring organisations must correctly classify the assignment method and pay all applicable statutory levies.
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| COS ASSIGNMENT WORKFLOW |
| |
| OVERSEAS APPLICANT (Defined CoS): |
| Submit specific online request via SMS -> UKVI approves (1-3 days) |
| -> Assign CoS -> Pay CoS fee (£239) + Immigration Skills Charge |
| |
| IN-COUNTRY APPLICANT (Undefined CoS): |
| Access annual Undefined allocation -> Assign CoS directly |
| -> Pay CoS fee (£239) + Immigration Skills Charge |
+-------------------------------------------------------------------------+
The Immigration Skills Charge (ISC)
Sponsors assigning a CoS to a Skilled Worker must pay the Immigration Skills Charge, unless a specific statutory exemption applies. The fee structure depends on the size and charitable status of the sponsor organisation:
- Small or Charitable Sponsors: £364 for the first 12 months of sponsorship, plus £182 for each additional 6-month period. An organisation qualifies as small if it satisfies at least two of the following criteria under the Companies Act 2006: annual turnover of £10.2 million or less, balance sheet total of £5.1 million or less, or 50 employees or fewer.
- Medium or Large Sponsors: £1,000 for the first 12 months of sponsorship, plus £500 for each additional 6-month period. Sponsoring a worker on a five-year visa requires an upfront ISC payment of £5,000.
Key exemptions from the Immigration Skills Charge include:
- Workers sponsored under specific research or chemical science SOC codes.
- Individuals switching from a valid UK Student visa directly into the Skilled Worker route.
- Sponsorship assignments for a total duration of less than six months.
If a sponsor assigns a CoS and fails to pay the correct ISC fee, UKVI will issue a payment request. Failure to settle the full balance within ten working days will render the CoS invalid and the associated visa application will be refused.
Worker Phase 1: Skilled Worker Visa Eligibility and Points Criteria
To secure a Skilled Worker visa, the applicant must score a minimum of 70 points under Appendix Skilled Worker. The points structure consists of 50 mandatory points and 20 tradeable points.
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| POINTS SCORING BREAKDOWN |
| |
| MANDATORY POINTS (Must score all 50): |
| - Valid Certificate of Sponsorship from licensed sponsor: 20 pts |
| - Job at appropriate skill level (RQF Level 3 or higher): 20 pts |
| - English language proficiency at minimum CEFR Level B1: 10 pts |
| |
| TRADEABLE POINTS (Must score 20 from one option): |
| - Salary meets standard general threshold & going rate: 20 pts |
| - Relevant PhD in non-STEM subject matching salary rules: 20 pts |
| - Relevant PhD in STEM subject matching salary rules: 20 pts |
| - Job on Immigration Salary List matching salary rules: 20 pts |
| - Applicant qualifies as a New Entrant matching salary rules: 20 pts |
| - Health & Care job on eligible national scale: 20 pts |
| |
| TOTAL REQUIRED: 70 PTS |
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Mandatory Points: Detailed Breakdown
- Sponsorship (20 Points): The applicant must hold a valid, assigned Certificate of Sponsorship issued by an A-rated sponsor. The CoS must not have been cancelled, withdrawn, or used in a previous application, and must have been assigned within the past three months.
- Job at Appropriate Skill Level (20 Points): The prospective role must map to an eligible SOC code listed in Appendix Skilled Occupations at RQF Level 3 (A-level equivalent) or above. The applicant does not need to hold formal A-level qualifications, but the day-to-day duties and responsibilities of the role must genuinely operate at that level.
- English Language Proficiency (10 Points): The applicant must prove English language capability in reading, writing, speaking, and listening to at least Level B1 of the Common European Framework of Reference for Languages (CEFR). This can be established via:
- Being a national of a majority English-speaking country.
- Passing a Secure English Language Test (SELT) with an approved provider (e.g. IELTS SELT Consortium, Pearson, Trinity College London, or PSI Services).
- Holding an academic degree taught in English, validated by Ecctis (formerly UK NARIC) as equivalent to a UK bachelor's, master's, or doctoral degree.
- Having already proved English proficiency at CEFR B1 or higher in a successful previous visa application.
Financial Requirement (Maintenance Funds)
Applicants must prove they can support themselves upon arrival in the UK. The rules require the applicant to hold at least £1,276 in personal funds. These funds must have been held continuously in an approved financial account for at least 28 consecutive days, ending no more than 31 days before the visa application date.
The maintenance requirement is waived if:
- The applicant has been living in the UK with valid permission for 12 months or longer on the date of application.
- The A-rated sponsor completes the "Sponsor certifies maintenance" section on the CoS, committing to maintain and accommodate the worker up to the end of their first month of employment, to an amount of at least £1,276.
Criminal Record Certificates and Tuberculosis Screening
Applicants assigned to specific SOC codes across healthcare, education, social services, and therapy professions must provide a formal criminal record certificate from every country in which they have resided for 12 months or more over the past ten years (since the age of 18). Certificates must be issued within the six months prior to application and translated into English by a certified translator.
Applicants residing in countries listed under Appendix T must undergo a screening examination for active pulmonary tuberculosis at a UKVI-approved clinic before submitting an application for entry clearance exceeding six months.
Worker Phase 2: The Visa Application Process
Once the CoS is assigned, the applicant applies online through the GOV.UK portal.
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| VISA APPLICATION STAGES |
| |
| 1. Complete online visa application form on GOV.UK |
| 2. Pay statutory application fees and Immigration Health Surcharge |
| 3. Verify identity (UK Immigration: ID Check app OR local VAC) |
| 4. Upload supporting documents (Degree, Ecctis, TB, Criminal Records) |
| 5. Attend biometric appointment (if required) |
| 6. Decision notification received (Standard: 3 weeks out / 8 weeks in) |
+-------------------------------------------------------------------------+
Identity Verification and Biometrics
Applicants complete identity verification through one of two pathways:
- UK Immigration: ID Check App: EEA citizens and non-EEA nationals holding biometric passports can scan their identity documents using an NFC-enabled smartphone. This pathway grants a fully digital immigration status (eVisa) upon approval without requiring physical passport submission or biometric collection appointments.
- Visa Application Centre (VAC): Applicants who cannot use the digital ID check app must book an in-person appointment at an approved VAC overseas or UKVCAS service point within the UK to enrol facial biometrics, provide fingerprints, and submit physical passports.
Fee Schedules and Immigration Health Surcharge (IHS)
Applicants must pay statutory application processing fees alongside the mandatory Immigration Health Surcharge, which grants access to the National Health Service:
- Immigration Health Surcharge (IHS): Standard rate of £1,035 per year of permission requested (or £776 per year for children under 18). An individual applying for a three-year Skilled Worker visa must pay £3,105 upfront in IHS fees. Health and Care Worker applicants are entirely exempt from the IHS.
- Visa Application Fees (Standard Skilled Worker):
- Up to 3 years (Applying from outside the UK): £719 per person.
- Over 3 years (Applying from outside the UK): £1,420 per person.
- Up to 3 years (Applying inside the UK to switch/extend): £827 per person.
- Over 3 years (Applying inside the UK to switch/extend): £1,500 per person.
- Visa Application Fees (Health and Care Worker):
- Up to 3 years (Inside or outside the UK): £284 per person.
- Over 3 years (Inside or outside the UK): £551 per person.
Priority processing services can be purchased at an additional cost (£500 for 5-day priority; £1,000 for next-working-day super priority, where available).
Evidence and Documentation: What Caseworkers Look For
Applications are assessed on documentary evidence. UKVI caseworkers cross-reference submitted materials with external databases, including HMRC, Companies House, and international credential registries.
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| SPONSOR LICENCE EVIDENCE |
| - Appendix A documents (Bank statements, PAYE, VAT, Premises lease) |
| - Hierarchy chart showing direct reporting lines and key personnel |
| - Detailed HR procedures for right-to-work and absence tracking |
| - Evidence of operational trading (Invoices, contracts, regulatory) |
+-------------------------------------------------------------------------+
+
+-------------------------------------------------------------------------+
| SKILLED WORKER EVIDENCE |
| - Valid CoS reference number assigned within last 3 months |
| - SELT certificate reference or Ecctis validated degree statement |
| - Bank statements (28-day rule) OR sponsor certified maintenance |
| - Overseas criminal record certificate(s) (where SOC code triggers) |
| - Approved TB clearance certificate (from Appendix T countries) |
+-------------------------------------------------------------------------+
v
+-------------------------------------------------------------------------+
| CASEWORKER SCRUTINY TARGETS |
| - Is the salary genuine and paid at or above going rate for hours? |
| - Does the SOC code accurately represent the actual day-to-day duties? |
| - Is there an artificial arrangement to bypass immigration controls? |
+-------------------------------------------------------------------------+
The Genuine Vacancy Assessment
Caseworkers have broad powers to refuse an application if they have reasonable grounds to believe the role does not represent a genuine vacancy. When assessing genuineness, caseworkers review:
- Whether the business has a logical commercial need for the advertised role at the specified skill level.
- Whether the applicant holds the experience, qualifications, and professional background necessary to carry out the duties.
- Whether the job description has been artificially tailored or exaggerated to match a higher SOC code simply to satisfy RQF Level 3 or salary thresholds.
- Whether the sponsor has created a role primarily to facilitate the applicant's settlement or entry into the UK.
If concerns arise, caseworkers can pause processing to interview either the prospective employee, the Authorising Officer, or both. Inconsistencies between the worker's account of their duties and the employer's statements on the CoS will lead to refusal.
Common Mistakes and Refusal Triggers
Small errors during the sponsorship process can cause long delays or outright refusals. The following issues frequently trigger compliance actions or visa refusals.
+-------------------------------------------------------------------------+
| MAJOR REFUSAL TRIGGERS |
| |
| [!] SOC CODE MISMATCH: Assigning a managerial SOC code to a lower-tier |
| role to meet skill or salary baselines. Refused for genuineness. |
| |
| [!] SALARY PRORATING ERROR: Paying £38,700 for a 45-hour week instead |
| of the required £46,440. Refused under mandatory salary floors. |
| |
| [!] UNALLOWABLE ALLOWANCES: Including bonuses, overtime, or travel in |
| the base salary calculation. Only guaranteed basic pay counts. |
| |
| [!] MAINTENANCE TIMING BREACH: Bank statements showing funds dipping |
| below £1,276 on even one day within the mandatory 28-day window. |
| |
| [!] FAILURE TO PAY SKILLS CHARGE: Misdeclaring company size as small |
| to pay £364 instead of £1,000. CoS invalidated after 10 days. |
+-------------------------------------------------------------------------+
1. Incorrect SOC Code Selection
Choosing a SOC code purely to satisfy minimum salary thresholds or skill levels, when the actual daily duties align with lower-skilled or unlisted occupations, is treated as deliberate manipulation. Caseworkers assess the substantive job description rather than the job title. If an administrative assistant is sponsored under SOC 2424 (Business and financial project management professionals), the application will be refused on genuine vacancy grounds.
2. Failure to Calculate Pro-Rated Working Hours Correctly
Published going rates correspond to a standard 37.5-hour working week (or the specific benchmark listed in Appendix Skilled Occupations). If an employment contract specifies 40, 45, or 48 hours per week, the going rate must be calculated proportionally upwards. For example, if a job has an occupation going rate of £40,000 for a 37.5-hour week, an employee working 45 hours must be paid a minimum of £48,000 (£40,000 divided by 37.5, multiplied by 45). If the employer enters £40,000 on the CoS for a 45-hour week, the worker's hourly rate will fall below the legal minimum, triggering a mandatory visa refusal.
3. Inclusion of Unallowable Allowances
Under Appendix Skilled Worker, only guaranteed basic gross pay can be counted towards the salary thresholds. Employers cannot include performance-related bonuses, commission, overtime, London weighting, shift allowances, or accommodation stipends. If a worker is offered £32,000 basic salary plus an anticipated £8,000 performance bonus, the qualifying salary for immigration purposes is recorded strictly as £32,000, failing the standard £38,700 threshold.
4. Overlooking the 28-Day Maintenance Timing Rule
When maintenance is not certified by the sponsor, applicant bank statements must show that funds remained continuously at or above £1,276 for every day of the 28-day period. If the balance drops to £1,275 for even a single day, the requirement is failed. The closing balance on the bank statement must also be dated within 31 days of the online application submission date.
Complex Scenarios and Edge Cases
Complex structural, timing, and relationship scenarios require careful navigation under the Immigration Rules.
Transitional Arrangements for Pre-4 April 2024 Workers
Workers who were assigned their initial Skilled Worker Certificate of Sponsorship before 4 April 2024, and have continuously held valid permission under the route since then, are protected by transitional rules:
- They can extend their stay, change sponsors, or apply for settlement using lower salary thresholds.
- The general salary threshold is anchored at £29,000 (rather than £38,700).
- The applicable going rates are evaluated against the 25th percentile (lower quartile) of ASHE earnings data, rather than the median 50th percentile.
- These transitional arrangements remain in force for applications submitted before 1 December 2030.
In-Country Switching Rules and Limitations
Individuals in the UK on specific non-work visas may switch into the Skilled Worker route without leaving the country, provided they do not hold permission in an excluded category. Switching is permitted from routes such as the Graduate visa, Youth Mobility Scheme, and specific family or temporary visas.
Switching is strictly prohibited for individuals holding permission as:
- Visitors
- Short-term students
- Parent of a Child at School
- Seasonal Workers
- Domestic Workers in a Private Household
- Individuals on Immigration Bail or with permission outside the Immigration Rules
Students holding valid Student visas can only switch into the Skilled Worker route if they have completed their course of study, or if their course was at degree level or higher and the employment start date on the CoS is after the course completion date. For PhD students, the start date must be at least 24 months after the course start date.
Dependant Visas and Family Restrictions
Skilled Workers can bring eligible dependants to the UK (partners and children under the age of 18 at the time of initial application), subject to key exceptions:
- Care Worker Exclusion: Individuals sponsored under SOC 6135 (Care workers and home carers) and SOC 6136 (Senior care workers) cannot sponsor dependants, unless the worker held continuous permission under these codes prior to 11 March 2024.
- Financial Maintenance for Dependants: The applicant or sponsor must demonstrate additional maintenance funds: £285 for a partner, £315 for the first child, and £200 for each additional child. These amounts must be held for 28 consecutive days unless the sponsor explicitly certifies maintenance for the entire family on the CoS.
Absences and Continuous Residence for Settlement (ILR)
The Skilled Worker visa provides a direct path to settlement (Indefinite Leave to Remain) after five years of continuous lawful residence. To qualify under Appendix Continuous Residence:
- The applicant must not have been absent from the UK for more than 180 whole days in any rolling 12-month period during the qualifying five-year period.
- Absences for work, holidays, or personal reasons count toward this limit. Days spent in transit do not count as whole days of absence.
- Exceptions apply for serious or life-threatening illness, certified natural disasters, or travel disruptions outside the applicant's control.
At the settlement stage, the sponsoring employer must formally confirm in writing that the worker is still required for the foreseeable future and will be paid at or above the relevant settlement salary threshold for the relevant occupation code.
Supplementary and Secondary Employment
Sponsored workers are permitted to undertake supplementary employment outside their contracted hours without notifying the Home Office, provided the work satisfies strict limits:
- The additional work does not exceed 20 hours per week.
- The work takes place outside the working hours contracted under their CoS.
- The role falls either under an occupation code listed on the Immigration Salary List or within the same SOC code and professional level as the primary sponsored employment.
If a worker wishes to undertake secondary employment that does not meet these criteria (e.g. working 25 hours per week in a different profession), the secondary employer must hold a sponsor licence, assign a separate Undefined CoS, and the worker must apply for and hold a secondary Skilled Worker visa.
Redundancy, Dismissal, and Visa Curtailment
If a sponsored worker's employment ends (via resignation, dismissal, or redundancy), the sponsor must notify the Home Office via the SMS within ten working days. Upon processing the report, UKVI will issue a curtailment letter reducing the worker's permission to 60 calendar days (or to the date their visa would have expired, whichever is shorter).
During this 60-day grace period, the individual must either:
- Find a new licensed sponsor, secure a new Certificate of Sponsorship, and submit an in-country application for a change of employment.
- Apply to switch into another eligible immigration route (such as a Global Talent, Partner, or Student visa).
- Voluntarily depart the UK.
If the worker fails to submit a valid visa application before the 60-day curtailment deadline passes, they become an overstayer, exposing themselves to civil penalties, enforced removal, and long-term re-entry bans under Part 9 of the Immigration Rules.
Practical Next Steps for Employers and Workers
Successfully managing UK sponsorship requires systematic planning at both the corporate and individual level. Employers looking to recruit international staff must evaluate their internal HR systems, verify their corporate documentation against Appendix A, and calculate gross salary baselines accurately before committing to sponsorship.
Prospective skilled workers should confirm that their prospective role meets the skill level and salary thresholds, assemble their English language and financial documents well in advance, and confirm whether criminal record or tuberculosis checks are required. Engaging with experienced immigration practitioners helps ensure full compliance with the Immigration Rules, preventing costly visa refusals and protecting the employer's sponsor licence.
Reviewed by Wesbridge Associates team on . We check our published guidance against GOV.UK and current Home Office rules.
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