Offshore Medical Clearance and OEUK Physical Exams - Occucare International
A crew member who cannot clear before rotation costs your operation $5,000 to $25,000 in emergency replacement – per worker, per missed deployment. Multiply that across a crew plan of 100+ rotational workers using three different clinics with two-week backlogs, and clearance delays become a six-figure operational problem. Occucare eliminates the bottleneck: OEUK physical, respirator fit test, surveillance baselines, and drug screening – completed by a board-certified, OEUK-qualified physician in a single clinic visit.
 Board-Certified, OEUK-Qualified Physicians
Single-Visit Clearance
Same-Day & Next-Day Availability
3,000+ Global Clinic Network
 Board-Certified, OEUK-Qualified Physicians
Same-Day & Next-Day Availability
Single-Visit Clearance
3,000+ Global Clinic Network
Clinic Hours
- Monday - Friday 7:30 AM - 4:30 PM CST
- +1 713 802 0801
What Is Offshore Medical Clearance?
Offshore medical clearance is a mandatory fitness-to-work assessment that certifies a worker is physically and mentally capable of performing duties in offshore environments – including oil and gas platforms, drilling rigs, production vessels, offshore wind installations, and maritime vessels. Without a valid medical clearance certificate, workers cannot legally deploy to offshore installations in most jurisdictions worldwide.
The internationally recognized standard for offshore medical fitness is the OEUK medical examination (formerly known as the OGUK medical), governed by Offshore Energies UK under the OEUK Medical Guidelines Issue 8 (November 2025). This standard applies to all personnel working in the UK Continental Shelf and is accepted globally as the benchmark for offshore medical fitness in the oil and gas industry. OEUK certificates are typically valid for two years, though shorter validity periods may be issued when the examining physician identifies conditions requiring closer monitoring.
Depending on the jurisdiction and type of offshore operation, workers may also require:
ENG1 maritime medical certificates
required for seafarers and offshore workers aboard UK-registered vessels, issued under Maritime and Coastguard Agency (MCA) standards. Valid for two years (one year for workers over 65).
U.S. Coast Guard physicals
required for merchant mariners and certain offshore personnel operating in U.S. waters under USCG Merchant Mariner Credential requirements.
Operator-specific fitness assessments
some major operators (Shell, BP, Chevron, TotalEnergies) maintain proprietary medical standards that exceed baseline OEUK requirements, particularly for safety-critical roles and Normally Unmanned Installations (NUIs).
Occucare International performs all of these examinations at our Houston clinic, conducted by board-certified, OEUK-qualified occupational medicine physicians.
Who This Is For
Occucare’s offshore medical clearance program is built for:
Operations managers and crew planners whose deployment schedules are being disrupted because medical clearance requires 2-3 visits across different providers – and a single missed clearance forces a $5,000 to $25,000 emergency crew replacement
HSE directors managing compliance across OEUK, USCG, and operator-specific fitness standards simultaneously – and needing a single provider qualified across all frameworks with centralized certificate tracking
Procurement and contract leads at offshore operators evaluating medical clearance vendors – needing consistent fitness-to-work standards, single-visit processing, and audit-ready documentation across crew rotations of 50 to 500+ workers
HR coordinators and workforce managers responsible for tracking certificate expiration dates across large rotational workforces – and dealing with the operational chaos when lapsed clearances are discovered at the heliport
Platform managers and OIMs who need crew members medically cleared for the specific physical demands of their installation type – including Normally Unmanned Installations where fitness standards are stricter and evacuation constraints are more severe
Individual offshore workers needing OEUK, ENG1, or Coast Guard medical clearance for deployment – seeking a single clinic visit with same-day certificate issuance instead of a multi-week, multi-provider process
If your crew clearances require multiple clinic visits, your certificate tracking is manual, your deployment schedules are regularly disrupted by medical backlogs, or your clearance exams are performed by general practitioners who “also do offshore medicals” — this program solves those problems.
What Happens When Offshore Medical Clearance Is Fragmented
The clearance process at most offshore operations is not a system. It is a patchwork – one clinic for the physical, another for spirometry, a third for the drug test, a fourth for the respirator fit test. Each visit requires scheduling, travel, and coordination. Each provider issues separate documentation. Nobody is tracking the complete picture. For operators managing large crew rotations, this fragmentation creates predictable and expensive failures.
Deployment Delays From Multi-Visit Clearance
When a worker needs an OEUK physical at one clinic, a respirator fit test at another, and drug screening at a third, the clearance timeline extends to 2-4 weeks – assuming nothing goes wrong with scheduling. For operators with tight crew rotation windows, a single delay in any one of those steps cascades through the entire deployment plan. The worker misses their helicopter, the rotation is short-staffed, and an emergency replacement costs $5,000 to $25,000 per missed rotation – before counting the scheduling disruption to the broader crew plan.
Lapsed Certificates Discovered at the Wrong Time
When certificate expiration tracking is manual – spreadsheets, calendar reminders, or no tracking at all – lapsed clearances are discovered when the worker arrives at the heliport. At that point, the options are expensive: $8,000 to $15,000 for an emergency replacement and rebooking. For operators with hundreds of rotational workers, even a 5% lapse rate generates dozens of these incidents annually, each one preventable with proactive certificate management.
Fitness Determinations Made by Unqualified Providers
Not all physicians performing offshore medical clearance exams are qualified to make fitness-to-work determinations for isolated, high-hazard environments. A general practitioner who “also does offshore medicals” may not understand the specific physical demands of Normally Unmanned Installations, the helicopter seating constraints that inform BMI thresholds, or the evacuation scenarios that the Chester Step Test is designed to assess. An inappropriate fitness determination – clearing a worker who should not have been cleared, or rejecting a worker who could have been cleared with a time-limited certificate – has consequences that range from operational disruption to catastrophic safety failure.
Inconsistent Standards Across Multiple Clearance Providers
When an operator uses different clinics in different cities for crew clearance – one in Houston, one in Lafayette, one in Houma – each clinic applies its own interpretation of the OEUK guidelines. One physician clears a worker with controlled hypertension on a full two-year certificate. Another physician at a different clinic restricts the same clinical profile to a six-month certificate. The operator has no consistency, no centralized records, and no coordinating physician ensuring that fitness-to-work standards are applied uniformly across the entire workforce.
No Integration Between Clearance and Ongoing Medical Oversight
At most clearance providers, the OEUK physical is a transactional event. The worker comes in, gets examined, receives a certificate, and leaves. The examining physician has no ongoing relationship with the employer, no connection to the injury management or surveillance program, and no context on the worker’s health trajectory over time. When a fitness-to-work question arises mid-rotation – can this worker return to duty after an illness? does this medication affect their clearance status? – there is no physician who knows the worker’s medical history and the employer’s operational context well enough to make a fast, informed determination.
OEUK Medical Exam - What It Covers
The OEUK offshore medical examination is a comprehensive health assessment designed to determine whether an individual can safely work in isolated, physically demanding environments where immediate hospital access is unavailable. The exam follows the OEUK Medical Guidelines and covers the following components:
Medical History and Physical Examination
The examination begins with a detailed health questionnaire covering current medications, past surgeries, chronic conditions, and lifestyle factors including smoking and alcohol consumption. The examining physician conducts a full physical examination assessing general health, mobility, and any conditions that could impair safe offshore performance.
Cardiovascular Assessment
Cardiovascular evaluation includes resting blood pressure measurement and, for workers over 40 or those with identified risk factors, a resting ECG. Workers with a history of cardiac events, stent placement, or bypass surgery require a minimum symptom-free period (typically three months) and supporting cardiology documentation before clearance can be considered. The OEUK guidelines require controlled risk factors and good functional recovery for full certification.
Respiratory Function (Spirometry)
Lung function is assessed using spirometry, measuring FEV1 and FVC. The OEUK standard generally requires FEV1 ≥60% predicted and FVC ≥75% predicted to ensure adequate respiratory reserve for respirator use. Workers with COPD, asthma, or prior respiratory conditions may receive time-limited certificates or restrictions, particularly for Normally Unmanned Installations where evacuation times are longer.
Vision and Hearing Tests
Vision screening confirms visual acuity meets the minimum standard for safe offshore operations, including color vision assessment for workers in safety-critical roles. Audiometry measures hearing thresholds to establish baseline and detect noise-induced hearing loss – critical for workers exposed to drilling equipment, generators, and heavy machinery on platforms.
Musculoskeletal Assessment
The physician evaluates joint mobility, spinal function, grip strength, and overall physical capability to determine whether the worker can safely perform offshore duties including climbing ladders, navigating steep stairways, carrying emergency equipment, and evacuating in emergency conditions. Workers with significant musculoskeletal limitations may be restricted from certain installation types.
Mental Health Screening
Offshore work involves isolation, extended shifts (typically 12 hours), and prolonged separation from family. The OEUK medical includes assessment of mental health status. Workers with mild, stable anxiety or depression managed on standard medications (SSRIs) for at least four weeks with no impairing side effects are generally eligible. Workers with recent self-harm ideation, psychosis, or personality disorders require a stability period of 6–12 months and specialist documentation.
BMI Assessment and Chester Step Test
Body mass index is assessed against OEUK thresholds. Workers with BMI above 40 are generally unfit for offshore work due to helicopter seating constraints and evacuation limitations. The Chester Step Test measures aerobic capacity by having the worker step on and off a platform at increasing speeds while heart rate is monitored. This standardized assessment confirms the worker has sufficient cardiovascular fitness for the physical demands of offshore work, including emergency evacuation scenarios.
Drug and Alcohol Screening
Offshore work requires strict sobriety. The OEUK medical includes drug and alcohol screening, and workers with active substance misuse or dependency cannot hold a valid certificate. Occucare performs both DOT and non-DOT drug and alcohol testing as part of the clearance process, with results integrated into your employer compliance records.
Additional testing may be required depending on the worker’s role and exposure profile. This can include HAZWOPER physicals, respirator medical evaluations (OSHA Appendix C), pulmonary function testing beyond standard spirometry, and role-specific fitness assessments such as working-at-height clearance. Occucare performs all of these at our Houston clinic.
Who Needs Offshore Medical Clearance?
Platform and rig workers
drilling crews, production operators, maintenance technicians, and construction personnel on fixed and floating installations
Vessel operators and maritime crew
workers aboard offshore supply vessels, tankers, pipe-laying vessels, and dive support ships requiring ENG1 or Coast Guard medicals
Helicopter passengers
anyone traveling by helicopter to offshore installations must meet OEUK fitness standards, including BMI thresholds for helicopter seating and the Chester Step Test for emergency evacuation capability
Offshore wind technicians
construction and maintenance workers on offshore wind farms requiring fitness-to-work assessment and working-at-height medical clearance under GWO (Global Wind Organisation) standards
Catering and support staff
non-technical personnel stationed on platforms (catering, housekeeping, administration) still require full offshore medical clearance due to the evacuation and emergency response demands of the environment
DoD and government offshore contractors
defense personnel and contractors on government offshore projects requiring both medical clearance and security-compliant testing protocols
Fragmented Clearance Providers vs. Occucare - The Operational Difference
| Factor | Fragmented Providers | Occucare |
| Clearance timeline | 2-4 weeks across multiple visits and providers | Single visit – 60-90 minutes, certificate issued same day |
| Physician qualification | GP or NP who “also does offshore medicals” | Board-certified, OEUK-qualified occupational medicine physician |
| Exam components per visit | Physical only – spirometry, fit test, drug screen at separate facilities | OEUK physical, spirometry, audiometry, Chester Step Test, ECG, drug screen, respirator fit test – all in one appointment |
| Certificate issuance | Delayed – physician reviews paperwork after appointment | Same-day – fitness determination made during the exam |
| Scheduling availability | 1-3 week backlog typical | Same-day and next-day availability maintained |
| Certificate expiration tracking | Manual – spreadsheet or no tracking | Automated renewal notifications to employer |
| Standards consistency | Varies by clinic and physician | Standardized across all workers – one physician, one standard |
| Medical Direction integration | None – transactional exam only | Clearance feeds directly into ongoing Medical Direction program |
| Multi-certification capability | Separate appointments for OEUK, ENG1, Coast Guard | OEUK + ENG1 + Coast Guard completed in same visit |
| Global network access | Single location only | 3,000+ vetted partner clinics — consistent standards worldwide |
| Deployment delay cost exposure | $5,000–$25,000 per missed rotation per worker | Eliminated through single-visit model and proactive scheduling |
How Occucare Delivers Faster Offshore Medical Clearance
Medical clearance delays are one of the most expensive operational problems offshore employers face. Occucare’s clearance process is specifically designed to eliminate the bottlenecks that cost operators thousands per incident and hundreds of thousands annually:
Step 1
Board-certified, OEUK-qualified physicians on staff
Your exam is performed by an occupational medicine physician with direct OEUK qualification – not a nurse practitioner, not a PA, not a general practitioner who “also does offshore medicals.” The physician makes the fitness determination during your appointment, not days later after reviewing paperwork.
Step 2
Complete clearance in a single clinic visit
OEUK physical, spirometry, audiometry, vision testing, Chester Step Test, ECG (when indicated), drug and alcohol screening, respirator medical evaluation, and any additional role-specific testing – all completed in one appointment. No referrals to other facilities. No multiple visits across different providers.
Step 3
ame-day and next-day appointment availability
Occucare maintains scheduling capacity specifically for offshore medical clearance to accommodate the unpredictable timing of crew rotation planning. When a deployment date moves up, your workers can get cleared without waiting weeks.
Step 4
Rapid certificate issuance with digital records
Clearance certificates are issued at the completion of the exam. Digital records are maintained and accessible to your HSE team for compliance tracking, certificate expiration monitoring, and audit documentation.
Step 5
Proactive certificate expiration management
 Occucare tracks every worker’s certificate expiration date and sends renewal notifications to the employer before clearance lapses – preventing the $8,000 to $15,000 emergency replacement cost that occurs when an expired certificate is discovered at the heliport.
Step 6
Integration with Medical Direction programs
For employers who use Occucare’s Medical Direction services, clearance exams feed directly into the ongoing physician oversight relationship. Your Medical Director already has context on each worker’s health history, making fitness-to-work decisions faster and more consistent across your entire workforce. When a fitness question arises mid-rotation, the physician who cleared the worker is the same physician answering the question.
Why Occucare - The Physician Qualification Difference
The OEUK medical exam is not a checklist. It is a clinical determination made by a physician about whether a worker can safely operate in an isolated, high-hazard environment where a medical emergency requires a helicopter to resolve. The qualification and judgment of the examining physician determines the quality of that determination.
At most clearance providers, the OEUK exam is performed by a general practitioner, nurse practitioner, or physician assistant who has limited experience with offshore-specific fitness considerations. They may not understand the physical demands that differ between a production platform and a Normally Unmanned Installation. They may not know the helicopter seating constraints that inform BMI thresholds. They may not have the occupational medicine training to determine whether a worker with a managed cardiac condition can be safely cleared with a time-limited certificate rather than permanently disqualified.
At Occucare, every offshore medical clearance exam is performed by a board-certified occupational medicine physician with direct OEUK qualification. That means:
Fitness determinations are made by a physician who understands offshore operational reality – not just the exam checklist, but the actual working conditions, evacuation scenarios, and installation types that the fitness standard is designed to protect against
Workers with manageable conditions receive pathways to clearance – a physician experienced in occupational fitness-to-work assessment knows the difference between a condition that genuinely disqualifies and a condition that can be managed through treatment, stability periods, and time-limited certificates. This means fewer workers unnecessarily rejected – and fewer emergency crew replacements for your operation
Fitness standards are applied consistently across your entire workforce – one physician, one standard, one interpretation of the OEUK guidelines. Not three different clinics with three different thresholds
Clearance integrates with your Medical Direction program – the physician who clears your worker is the same physician who will govern their injury triage, fitness-to-return decisions, and OSHA recordable classification during deployment. That continuity produces faster decisions and better outcomes
The Financial Case - What Clearance Delays Cost Your Operation
| Delay Scenario | Cost to Operator |
| Worker fails to clear before rotation – replacement needed | $5,000-$25,000 per missed rotation |
| Clearance requires 2-3 visits across providers | 2-4 weeks delay + worker downtime costs |
| Expired certificate discovered at heliport | $8,000-$15,000 (emergency replacement + rebooking) |
| Batch crew clearance delayed by 5 business days | $50,000-$200,000+ in project schedule impact |
| Lapsed surveillance invalidates clearance mid-rotation | $20,000-$75,000 (mid-rotation replacement + transport) |
| Worker unnecessarily rejected by unqualified examiner | $5,000-$25,000 (replacement) + loss of experienced crew member |
The annual cost for a mid-size operator: An operator running 200 rotational workers with a 10% clearance delay rate and a 5% lapse rate is absorbing $100,000 to $400,000 annually in preventable deployment disruptions – before counting the project schedule impact, overtime for short-staffed crews, and the institutional knowledge lost when experienced workers are replaced. Occucare’s single-visit model, same-day availability, and proactive certificate management eliminate these costs at their source.
Industries We Serve
Frequently Asked Questions
OEUK and OGUK refer to the same offshore medical examination. In 2022, Oil & Gas UK (OGUK) rebranded to Offshore Energies UK (OEUK) to reflect the broader energy sector including offshore wind. The medical standards, exam components, and certification process remain the same. If you previously held an OGUK medical certificate, OEUK certificates are the direct continuation. The current governing document is the OEUK Medical Guidelines Issue 8, published November 2025. Occucare performs OEUK-compliant examinations under the current standard.
A standard OEUK offshore medical examination at Occucare takes approximately 60 to 90 minutes when all components are completed in a single visit. This includes the health questionnaire review, physical examination, spirometry, audiometry, vision testing, Chester Step Test, drug and alcohol screening, and physician fitness determination. If additional testing is required (ECG, respirator fit test, HAZWOPER physical), the total appointment may extend to approximately two hours. Certificates are issued at the completion of the exam.
Conditions that may result in a temporary or permanent unfit determination include uncontrolled hypertension, unstable cardiac conditions (recent heart attack or stent placement within three months), active substance misuse or dependency, BMI above 40 (due to helicopter seating and evacuation constraints), severe COPD with FEV1 below 60% predicted, active psychosis or recent self-harm ideation (requiring 6-12 months stability), uncontrolled epilepsy, and insulin-dependent diabetes in some circumstances. Many conditions that initially appear disqualifying can be managed through treatment, stability periods, and time-limited certificates. Occucare's physicians work with workers and their treating specialists to find pathways to clearance wherever medically appropriate.
Standard OEUK offshore medical certificates are valid for two years. ENG1 maritime certificates are also valid for two years (one year for workers over 65). However, the examining physician may issue a certificate with a shorter validity period if a condition requires closer monitoring - for example, a newly managed cardiac condition or controlled diabetes. Occucare tracks certificate expiration dates for employer clients and sends proactive renewal notifications to prevent lapsed clearances that could disrupt deployment schedules.
Yes. Occucare's board-certified occupational medicine physicians perform U.S. Coast Guard physical examinations for merchant mariners and offshore personnel requiring USCG Merchant Mariner Credentials. These can be completed alongside OEUK medicals in the same appointment for workers who require both certifications. We also perform FMCSA DOT physicals for workers who hold commercial driving credentials in addition to their offshore roles.
Workers should bring a valid government-issued photo ID, a completed health questionnaire (provided in advance by Occucare or the employer), a list of current medications with dosages, any relevant specialist reports or letters (cardiology, pulmonology, psychiatry) if they have an existing condition that may affect clearance, previous offshore medical certificates if available, and prescription eyeglasses or contact lenses if worn. Workers requiring respirator fit testing should arrive clean-shaven in the area where the respirator seals against the face.
Yes. For operators managing crew rotations of 50, 100, or 200+ workers, Occucare builds customized clearance programs with batch scheduling, centralized certificate tracking, proactive renewal notifications, and standardized fitness-to-work protocols across your entire workforce. For employers using Occucare's Medical Direction services, the clearance program integrates directly with your ongoing physician oversight - the Medical Director who governs your injury management and surveillance compliance is the same physician governing your crew's fitness-to-work determinations.
When a worker's initial exam identifies a condition that may affect fitness-to-work status, Occucare's physicians do not default to permanent rejection. They assess whether the condition can be managed through treatment, whether a stability period and supporting specialist documentation would allow future clearance, and whether a time-limited certificate with closer monitoring is appropriate. The goal is to find a medically sound pathway to clearance wherever one exists - because unnecessarily rejecting an experienced offshore worker costs your operation a $5,000 to $25,000 crew replacement and the institutional knowledge that worker carries.
Related Offshore Services
Offshore Occupational Health Programs
Physician-governed medical oversight, injury management, and fitness-to-work programs for your entire offshore workforce. Clearance exams integrate directly with Medical Direction.
Respirator Fit Testing (Offshore)
OSHA 1910.134-compliant quantitative and qualitative testing for Hâ‚‚S, benzene, and hydrocarbon environments. Completed during the same visit as your medical clearance.
Surveillance Screenings
OSHA-mandated medical surveillance for noise, benzene, asbestos, silica, and lead exposure. Baseline screenings incorporated into the clearance appointment.
Corporate Medical Direction
Physician-governed oversight for your entire workforce health program. Your Medical Director governs clearance, injury triage, surveillance, and return-to-work as one integrated system.
Fit-for-Duty Exams
Job-specific fitness evaluations for workers returning from injury or illness, or transitioning to safety-critical roles.
Houston Clinic Services
Our Houston occupational health clinic serving construction, industrial, and offshore employers across the greater Houston area.
Schedule an Offshore Medical Exam
Stop losing $5,000 to $25,000 per missed rotation because your clearance process requires multiple visits across multiple providers. Occucare’s single-visit model puts a board-certified, OEUK-qualified physician in your clearance program – with same-day availability, proactive certificate management, and direct integration with your Medical Direction program.