Chester Step Test Preparation for Offshore Workers and ERTs

Separate the medical, fitness test and training certificate

An offshore medical, an exercise assessment, fitness-to-train documentation and employer mobilisation requirements can serve different purposes. Ask which documents are required for your particular role and what the provider will issue.

OEUK’s current publication listing identifies Medical Guidelines and Examiners Manual Issue 8.2, dated August 2026. Older online summaries may describe earlier editions. We do not reproduce a generic offshore pass number from those summaries: the examiner should confirm the current role-specific requirement and interpretation.

Confirm these details before training for a score

• Exact role, employer/operator and planned mobilisation date.
• Whether the request is for an OEUK medical, Chester fitness assessment, fitness-to-train documentation or a combination.
• Current guidance edition and any operator-specific requirements.
• Whether emergency response duties or specialist tasks require additional assessment.
• The accepted provider, report/certificate format, validity and retest arrangements.

Choose a suitable preparation plan

For a confirmed Chester Step assessment, select the step adaptation and arrange supervised familiarisation if needed. If a different exercise test has been specified, confirm suitable practice with the assessor.

The 12-week foundation plan starts with a modest workload for adults who meet its entry criteria. The 8-week plan is for adults already exercising consistently and meeting its stronger starting criteria. Both include home/gym strength options, controlled aerobic sessions, recovery rules and printable checklists.

Use the exercise companion to learn the movements. Repeat weeks when recovery or technique is not comfortable. If an appointment is too close, discuss the next steps with the assessor rather than compressing the programme.

These are general training examples, not medical clearance or a validated guarantee of reaching an occupational threshold. Get individual advice if you have symptoms, health concerns, restrictions or are returning after illness or injury.

Fit the programme around work and rotations

• Use the plan as a sequence of sessions rather than a rigid Monday-to-Sunday obligation. Maintain recovery gaps when moving days.
• On a demanding shift or after poor sleep, replace the harder session with easy movement or recovery. Do not add missed work to the next session.
• Use safe available equipment: level walking, a stationary cycle or an appropriate treadmill can support general conditioning. These alternatives do not become interchangeable assessment results.
• A low exercise step is useful for controlled practice when space and balance allow. Ask for individual instruction if you are unfamiliar with the movement.
• Allow time for the medical and any requested follow-up before mobilisation. A final-week rush is not a substitute for a longer preparation period.

Before and after the appointment

Follow the examiner’s preparation instructions and bring the employer’s written brief, relevant prior certification and requested medical information. Explain any recent illness, injury, medication change or symptoms. Do not change medication or use supplements to try to alter exercise heart rate.

Ask what the result means for each document you need, and who makes the final acceptance decision. Keep the report and any restrictions with your approved employment/medical records.

If the result is low, borderline or unexpectedly high

For emergency response duties, discuss the result in relation to those duties with the appropriate examiner and employer. A number from a different test or an old certificate cannot automatically replace the requested evidence.

Ask for the actual result, test method, whether the test was valid, and the next action. Do not round a borderline estimate up yourself or substitute a watch estimate. If heart-rate readings changed very little or the result seems implausibly high, ask the practitioner to review the input data and interpretation. Read why a small heart-rate rise can create a high estimate.

Agree whether further training, a repeat assessment or medical review is appropriate. Do not book repeated attempts simply to obtain a more favourable number.

Your next step

Choose your preparation route · 12-week foundation plan · 8-week active plan

Book through the employer or medical examiner if they require a nominated service. Our provider directory is accepting applications; it does not yet contain published providers. Confirm acceptance before paying for a test.

Organising assessments? See our Chester service setup guide, CST2 software and practitioner training and competency.

Need a combined setup? Request an organisation proposal for the software, equipment and practitioner preparation your service needs.

Sources and scope

• OEUK Medical Guidelines, Issue 8.2 — current edition and scope identified from the official public listing. Detailed criteria must be checked in the applicable manual by the examiner.
• OEUK medical examiner register — a route to locate registered doctors; confirm that the provider offers and can report the required assessment.

Sources checked 19 October 2026. Employer and examiner instructions can change. These pages provide general preparation guidance; they do not award a pass, certification or medical clearance.