Is this the same as occupational health?
No, and the distinction matters before you book.
An occupational health assessment is done by a clinician with specific occupational medicine training, usually commissioned and paid for by your employer, and typically involves reviewing the role, the workplace and the risk assessment. It reports to the employer.
A GP letter is a doctor's assessment of you and your capacity, given to you. It is frequently accepted and frequently useful — but where an employer has asked specifically for OH, it may not satisfy them. Ask them which they want.
Will it name my condition?
Only if you want it to, or if the request genuinely requires it. The default is to write around function — what you can and cannot currently do, and for how long.
That is normally all an employer needs and all they are entitled to. Your diagnosis is your information.
Can my employer refuse the adjustments?
They can decline what they judge unreasonable, but the duty is to consider them properly.
If a health condition has a substantial and long-term effect on your day-to-day activities, the Equality Act 2010 places a duty on your employer to make reasonable adjustments — and what counts as reasonable depends on the size and resources of the organisation. ACAS guidance is free and clear, and their helpline is genuinely useful.
What makes a letter more likely to work?
Specificity, and a time limit. "Reduced hours for six weeks, building back to full time" is actionable. "Should avoid stress" is not, and employers cannot implement it even if willing.
The other thing that helps is knowing your job. A letter that names the actual tasks that are difficult carries far more weight than one describing symptoms in general terms.
Can you say I am fit to return to work?
Yes, where the assessment supports it. But worth knowing: you do not legally need a letter confirming you are fit to return. A fit note is advice to your employer, not a prohibition, and you can go back before it expires without anyone's countersignature.
Some employers ask anyway, which their policy may permit.
Can you certify me fit to drive, or for a HGV medical?
No to both, and for different reasons.
Fitness to drive is decided by the DVLA, on their criteria, and where a condition is notifiable the duty to notify them is yours personally. We can advise whether it applies.
HGV, PSV, aviation, diving and seafarer medicals require a certified examiner and an in-person examination. The D4 in particular needs formally measured visual acuity and visual fields, which cannot be done on video.
My employer is asking for a letter for every absence.
They may be entitled to under your contract, but it is worth reading what the policy actually says — and worth noting that repeated requests for short absences sometimes signal the start of a capability or attendance process.
Knowing that is more useful than buying another letter. It may also be the point at which the underlying condition deserves proper attention rather than repeated certification.
Can you write it for an insurance or pension claim?
We can provide a factual letter about what was assessed and found. Insurers and pension schemes usually want a specific form or a full report, sometimes with access to your medical records — which requires your consent and comes from whoever holds them.
Send us what they have asked for and we will tell you honestly whether a GP letter meets it.