Many people finishing their studies in the UK feel uncertain about their next steps, especially when they are on a post-study visa and want to remain in the country by moving into sponsored employment. It is very common to feel unsure about how sponsorship works, what your employer must do, and what happens if your probation period is not yet completed. Clear guidance can help you understand your position and make confident decisions.
This article explains, in plain English, how you can move from a post-study visa into a Skilled Worker visa, what role the Certificate of Sponsorship (CoS) plays, and the practical steps to take.
Understanding the issue or context
You asked for advice about your immigration status and were told that, if you want to complete your probation period and remain in the UK beyond your post-study visa, you will need a Certificate of Sponsorship (CoS) from your employer.
This situation is very common. Many employers are unsure about sponsorship rules, and many workers feel uncertain about whether their job qualifies or whether timing will affect their status.
Understanding how the Skilled Worker system works helps you avoid unnecessary stress and plan your future in the UK with clarity.
The legal rules or framework
1. You can remain in the UK on your current visa until its expiry
A post-study visa gives you lawful permission to work and stay in the UK until the end of your grant.
Once it expires, you must switch into another route — such as Skilled Worker — before the expiry date.
2. A Skilled Worker application requires a valid Certificate of Sponsorship (CoS)
A CoS is issued by a UK employer who:
- holds a valid sponsor licence,
- is offering you a genuine role,
- pays the correct salary,
- uses the correct Standard Occupational Classification (SOC) code.
Without a CoS, you cannot submit a Skilled Worker visa application.
3. You can switch from a post-study visa to a Skilled Worker visa from within the UK
This is one of the advantages of being on a post-study route.
If eligible, you can apply from inside the UK as long as:
- your employer issues a CoS, and
- your application is submitted before your current visa expires.
4. There is no immigration requirement to complete probation before sponsorship
The Home Office does not require you to finish your probation period before an employer sponsors you.
However, employers sometimes prefer to wait until they are confident about your performance.
This is an employment decision, not an immigration rule.
5. The role must meet salary and skill requirements
For a Skilled Worker visa, the job must:
- be at the required skill level,
- meet the minimum salary threshold,
- be a genuine, skilled role.
Your job title alone does not determine eligibility — the SOC code does.
6. You must maintain lawful status at all times
If your employer is slow to act, you must:
- monitor your visa expiry date carefully,
- ensure your application is submitted in time,
- avoid becoming an overstayer.
Once your visa expires, you cannot apply from the UK.
Practical steps to take (step-by-step guidance)
1. Confirm whether your employer has a sponsor licence
If they do not, they must apply for one — this takes time.
If they do, ask whether they are prepared to sponsor you.
2. Request clarity in writing
Ask HR for written answers to:
- whether they intend to sponsor you,
- which SOC code they will use,
- the salary they will offer under sponsorship,
- when they can issue your CoS.
A clear timeline reduces uncertainty.
3. Provide documents your employer may need
These may include:
- passport,
- current visa details,
- degree certificates,
- CV,
- job description.
4. Track your visa expiry date
Work backwards:
- When does your visa expire?
- When must the CoS be issued?
- When should you submit your Skilled Worker application?
5. If your employer delays
You may need to:
- remind them politely of the time limits,
- ask for an estimated timeline,
- consider alternative sponsors if the delay becomes risky.
6. Submit your Skilled Worker application before expiry
A timely in-country application protects your lawful status while the Home Office processes your case.
Common pitfalls to avoid
- Relying on verbal promises of sponsorship. Ask for written confirmation.
- Assuming probation must finish first. This is an employment issue only, not an immigration rule.
- Waiting too long for your employer to act. You must protect your own visa timeline.
- Applying with an incorrect SOC code or salary. This is a common cause of refusal.
- Letting your visa expire. Overstaying severely affects future immigration applications.
Frequently Asked Questions
Does my employer have to sponsor me before probation ends?
No. The Home Office does not require this. It is purely an employer’s decision.
Can I switch to a Skilled Worker visa from within the UK?
Yes — as long as you apply before your current visa expires.
What if my employer does not have a sponsor licence?
They must apply for one. This can take several weeks to months.
What is a Certificate of Sponsorship (CoS)?
A digital reference number issued by your employer that allows you to apply for a Skilled Worker visa.
Can I stay in the UK while my Skilled Worker application is processed?
Yes — if you applied before your current visa expired.
What if the Home Office refuses the application?
You may be able to request an Administrative Review or submit a new application, depending on the reason for refusal.
Conclusion
If you’d like to understand your rights and options in plain English, visit LegalGuidance.org — a free resource powered by Martin Taggart Legal Consulting.
For professional, fixed-fee advice from a UK solicitor, visit MartinTaggart.com.
This information is general guidance only and not legal advice. For personalised support, please contact Martin Taggart Legal Consulting.