Offshore medical (oil, gas and energy)
A medical check that decides whether you are fit to work offshore on an oil, gas or energy installation, where medical help and escape may be difficult.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- It decides if you are fit to work offshore, against OEUK/Energy UK standards — a safety check, not a treatment.
- Distance from medical help, slow helicopter/boat evacuation and the need to escape and survive in an emergency drive the standards.
- A certificate usually lasts up to two years; some roles (crane, rope access, Emergency Response Team) have extra requirements, and body size can matter for helicopter and suit safety.
- Be honest about your health and medicines — a condition that is minor on land can be serious offshore, and the examining doctor is impartial.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Confirms you are fit to work offshore, so you can be deployed.
Using the offshore medical as a general health check — it only answers fitness to work offshore against the relevant standard.
The approved doctor usually tells you the outcome and, if you are fit, issues the certificate. Any restriction is explained.
A clear explanation of the outcome, any restriction, and the certificate's expiry date.
The approved doctor usually tells you the outcome and, if you are fit, issues the certificate. Any restriction is...
The doctor may ask for an eye test, GP details or a specialist report before deciding. This is routine and does...
You are told why, what could change it, and how to seek a review or appeal. You may be advised to see your GP or a...
Diarise the expiry date (usually up to two years) and arrange your next medical in good time so you can keep...
What is an offshore medical?
An offshore medical decides whether you are medically fit to work on an offshore oil, gas or energy installation — including offshore wind. It is required before you can work offshore in the UK sector. It is a safety check against an industry standard, not a treatment or a general health MOT.
The standard most widely used is set by Offshore Energies UK (OEUK, formerly Oil & Gas UK), with related guidance from Energy UK for some renewables work. The medical is carried out by a doctor approved to do offshore examinations. The reason the bar is set carefully is the environment: you may be far from hospital, evacuation by helicopter or boat can be slow and weather-dependent, and you must be able to escape and survive in an emergency, including using breathing apparatus during helicopter underwater escape training.
The doctor checks things such as your height, weight and body size (which can affect helicopter and survival-suit safety), eyesight, colour vision and hearing, heart and lungs, and any conditions or medicines that could be dangerous offshore. Some roles — for example crane operator, rope access or Emergency Response Team duties — have extra fitness criteria. You are told the outcome — fit, fit with restrictions, or not fit — and a certificate is usually valid for up to two years.
An offshore medical can find a condition that affects your certificate. That can be hard news, but the standards exist to protect you and your workmates in a place where help is not close at hand.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Offshore medical vs an ordinary health check
| Point | Ordinary health check | Offshore medical |
|---|---|---|
| Purpose | Find and manage health issues | Decide fitness against a safety standard |
| Standard | General advice | OEUK / Energy UK criteria |
| Outcome | Advice and treatment | Fit, fit with restrictions, or not fit |
| Environment in mind | Daily life | Remote site, slow rescue, escape and survival |
An offshore medical is not a substitute for normal NHS care; it answers a specific work-fitness question.
Preparing for your test
- Check your employer and the site's standard (OEUK, or Energy UK for some renewables) and book an approved examining doctor.
- Bring photo ID and any previous offshore certificate.
- Bring any glasses or contact lenses you use, and recent eye-test details if you have them.
- Bring a full list of your medicines and doses, including inhalers, insulin and over-the-counter items.
- Bring details and letters about conditions such as diabetes, epilepsy, heart problems, mental-health conditions or sleep apnoea.
- Be ready for height, weight and body-size measurement, plus vision, colour-vision and hearing tests and a physical examination.
- If you are going for a safety-critical role (crane, rope access, Emergency Response Team), expect extra fitness requirements.
- Answer honestly — leaving out a relevant condition can invalidate the certificate and is dangerous offshore.
What happens
The appointment is a structured assessment against the offshore standard, not a treatment. The approved doctor reviews your medical history and medicines, then examines you.
You will usually be measured for height, weight and body size (which affect helicopter seating and survival suits), and have your eyesight, colour vision and hearing tested. Your heart, lungs and blood pressure are checked, and you may be asked about chest, neurological, diabetes, sleep and mental-health symptoms. The doctor considers how a condition could behave offshore, where rescue can be slow, and whether you can escape and survive in an emergency.
From late 2025 the OEUK standard moved to performing some routine tests only when clinically indicated, so not everyone has every test every time. The doctor then decides whether you meet the standard, and tells you the outcome — fit, fit with restrictions, or not fit — and the reasons. The examiner is impartial; the job is to apply the standard honestly.
Is this test right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- Using the offshore medical as a general health check — it only answers fitness to work offshore against the relevant standard.
- Expecting any doctor to issue it — it must be an approved examining doctor.
- Relying on it if you already know you do not currently meet a clear standard for a serious condition.
- Assuming a certificate for one role automatically covers a safety-critical role with extra requirements.
Delay or rearrange if…
- You have a recent blackout, seizure, heart event, stroke or unstable symptoms still being investigated.
- Your diabetes is poorly controlled or you have had recent severe hypoglycaemia.
- You have a current, significant mental-health crisis or are at risk of self-harm.
- You are waiting for an eye test, specialist opinion or treatment that will change the outcome.
- You are recovering from recent surgery or serious illness and your fitness is still changing.
Alternatives to discuss
- Getting any underlying condition assessed and treated first, then re-attending when stable.
- Asking your employer or the examining doctor about your specific condition before booking.
- Seeking a review or appeal if you are found not fit, rather than simply re-testing elsewhere.
- Considering an onshore or different role if you cannot meet a safety-critical requirement.
- Occupational-health advice on suitable adjusted work.
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Benefits
- Confirms you are fit to work offshore, so you can be deployed.
- Helps keep you and your workmates safe where rescue and treatment can be slow.
- Can detect a health problem, such as high blood pressure or poor vision, in time to treat it.
- Checks you can cope with survival training and emergency escape demands.
- Gives clear documentation of any restriction without sharing your private medical detail with the employer.
Risks & complications
- Finding you need glasses or a vision/colour-vision correction recorded on the certificate.
- Being asked for more information or a specialist report before a decision.
- Being issued a certificate for a shorter period so your health is reviewed sooner.
- Being advised that your weight or body size affects helicopter or survival-suit safety.
- Time and cost, as this is a paid industry medical, not NHS care.
- Being assessed as fit with restrictions, or not fit for a specific safety-critical role.
- Needing referral or further tests that delay deployment.
- Discovering a condition that needs treatment and may affect offshore work.
- Being assessed as not fit to work offshore at this time.
- A serious finding (such as an abnormal heart rhythm or very high blood pressure) needing prompt medical care.
Offshore work is unforgiving of conditions that can suddenly worsen far from help — for example uncontrolled diabetes, heart disease, epilepsy, severe mental-health conditions, or anything affecting your ability to escape and survive in an emergency. Body size also matters for helicopter and survival-suit safety. If you think a condition may affect you, ask the examining doctor what the standard requires, whether a restriction or appeal is possible, and what you can do to meet it.
Published figures to discuss
There is no meaningful complication rate for this medical, because it is an assessment rather than a procedure. How often offshore workers are found unfit or restricted varies widely by age, role and underlying health, and is not published as a single reliable figure. We therefore avoid quoting a percentage and describe outcomes in plain terms instead.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Remote-site medical risk | Role- and condition-specific | The key issue is whether a condition could deteriorate where evacuation or specialist care is delayed. | HSE — Offshore health and safetyhse.gov.ukSource-linked context |
| Fitness restrictions | Common enough to plan for | Cardiac disease, seizures, insulin-treated diabetes, mental-health instability, respiratory disease or medication effects can affect certification. | Guide sourcesClinical context |
| Incomplete evidence delaying certificate | Recognised | Specialist letters, test results or medication stability may be required. | HSE — Offshore health and safetyhse.gov.ukSource-linked context |
| Confidentiality and employer pressure | Occupational-health risk | The certificate should communicate fitness clearly without unnecessary clinical detail. | HSE — Offshore health and safetyhse.gov.ukSource-linked context |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
There is no physical recovery. 'Afterwards' is about the certificate, any restrictions, and what to do if a health issue is found.
- Being asked for an eye test, GP letter or specialist report before a final decision is common.
- A shorter certificate period for closer review is a normal outcome with some conditions.
- A restriction such as 'must wear glasses' is routine and still lets you work.
- Feeling anxious while waiting for the outcome is understandable when your job depends on it.
Aftercare
- Keep your offshore certificate safe and available for mobilisation.
- If a restriction applies, always follow it at work.
- If a health problem was found, see your GP or specialist and follow the plan.
- Tell an approved doctor if your health changes in a way that could affect offshore fitness.
- Diarise the expiry date and book your next medical in good time.
- Keep a copy of any report; you can usually see a report before it is shared and ask for factual corrections.
- If you are found not fit, ask about the review or appeal route rather than simply re-booking elsewhere.
- Photo ID
- Previous offshore certificate
- Glasses or contact lenses
- Recent eye-test details if available
- Up-to-date medicines list
- Specialist or GP letters about relevant conditions
- A note of the certificate's expiry date
⚠ Get urgent help if…
- Sudden change or loss of vision, or double vision — get assessed before working offshore.
- Blackout, faint, fit or seizure — seek medical advice and do not mobilise until reviewed.
- Chest pain, severe breathlessness or palpitations — seek urgent medical care.
- Symptoms of a stroke (face drooping, arm weakness, slurred speech) — call 999 immediately.
- New severe mental-health symptoms or thoughts of self-harm — seek help promptly; offshore isolation can make these dangerous.
- Repeated very high or very low blood sugars if you have diabetes.
- Any condition a clinician says makes it unsafe for you to work offshore or undertake escape training.
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your specialist gives you.
Results & realistic expectations
A good result means you meet the offshore standard and receive a certificate, sometimes with sensible restrictions such as wearing glasses or limits on certain roles. The certificate is usually valid for up to two years.
A medical cannot guarantee you will stay well throughout the certificate, and it does not remove the need to seek help if your health changes. If you are found not fit, this is often not permanent — many conditions can be treated or stabilised, and you can seek a review or re-examination. The examining doctor should explain exactly what would need to change.
An offshore medical is a snapshot. It is normally valid for up to two years (shorter where a condition needs closer review). A new or worsening condition can require an earlier reassessment. Renew in good time, because mobilising offshore without a valid certificate is not permitted.
Related tests, treatments or support
Offshore medicals are usually done alongside required safety and survival training (such as BOSIET/helicopter underwater escape and sea survival). The medical certifies fitness; it does not cover training or competence, which are assessed separately. Role-specific medical checks (crane, rope access, Emergency Response Team) may be combined with the standard medical.
Follow-up & long-term care
If you are fit, the next contact is your renewal before expiry. If more information is needed, the approved doctor will tell you what to provide. If a condition is found or you are restricted, you may be referred to your GP or specialist, and told about the review or appeal route.
- Keep long-term conditions such as diabetes, blood pressure and heart conditions well controlled and reviewed.
- Keep your eyesight and hearing checked, especially before renewal.
- Maintain a body weight and fitness compatible with helicopter and survival-suit safety where relevant.
- Renew your certificate before it expires to avoid a gap that stops you working.
- Seek a reassessment if your health changes in a way that could affect offshore fitness.
Repeat, follow-on and what comes next
- Being asked for an eye test, GP letter or specialist report before a decision is common and is not a failure.
- A restriction (such as 'must wear glasses') or a shorter certificate is a frequent, sensible outcome.
- Many people found not fit can be certified later once a condition is treated or stabilised; a review/appeal route exists.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- A clear explanation of the outcome, any restriction, and the certificate's expiry date.
- Honest advice on whether it is safe to mobilise while any condition is treated.
- Signposting to your GP or a specialist if a health problem was found.
- Information on the review or appeal route if you are found not fit.
- A copy of your report and the chance to correct factual errors before it is shared.
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- The examining doctor's fee and the standard being applied (OEUK or other).
- Whether additional tests are needed, such as detailed eye, hearing or lung-function assessment.
- Any extra checks for safety-critical roles (crane, rope access, Emergency Response Team).
- Whether the doctor needs to obtain records or specialist reports.
- How quickly you need the appointment and certificate.
- Whether your employer pays or you pay yourself.
- The fee for the offshore examination and the certificate.
- Whether vision, colour-vision, hearing and body measurements are included.
- Any extra fee for role-specific assessments or additional tests.
- What happens, and any cost, if more information is needed before a decision.
- What happens if you are found not fit or are restricted.
- Whether a follow-up or review appointment is included.
On the NHS? The offshore medical is an industry occupational medical with a fee rather than NHS care; the NHS still treats any condition the medical uncovers.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- Not being clear that the examining doctor is impartial and applies a fixed standard.
- Releasing a full medical report to an employer without your explicit consent, rather than just the outcome.
- Not being told you can usually see a report before it is shared and ask for factual corrections (Access to Medical Reports Act 1988).
- Feeling pressured to under-report a condition to 'pass', which is unsafe offshore and can invalidate the certificate.
- No clear explanation of the review or appeal route if you are found not fit.
Marketing red flags
- 'Guaranteed pass' or 'no-fail' offshore medicals.
- Examinations offered by doctors not approved for the relevant standard.
- Suggesting you hide a condition from the examiner.
- Vague pricing with extra charges only revealed after the appointment.
- Claiming an 'unfit' decision can simply be bought around at another clinic.
Choosing a specialist safely
- Check the specialist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- Which standard applies to my site — OEUK, Energy UK, or another?
- Do I meet the vision, colour-vision, hearing and body-size requirements for my role?
- If I have a condition such as diabetes or a heart problem, what does the standard require?
- Are there extra fitness requirements for my role (crane, rope access, Emergency Response Team)?
- If you cannot certify me as fully fit, could I be fit with restrictions, and how do I appeal?
- Will I be fit for helicopter escape and sea-survival training?
- What information goes to my employer, and what stays confidential?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the specialist who carries out my test, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this test not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
Who can carry out an offshore medical?
How long is the certificate valid?
Does my weight matter?
What happens if I do not meet the standard?
Is the offshore medical available on the NHS?
Will my employer see my medical details?
Are the rules changing?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: OEUK — Medical Aspects of Fitness for Work Offshore: Guidance for Examining Physicians HSE — Offshore health and safety HSE — Health surveillance Faculty of Occupational Medicine — Good Occupational Medical Practice Society of Occupational Medicine — about occupational health Access to Medical Reports Act 1988 (legislation.gov.uk)
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
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