Occupational health (OH) assesses — fitness for work, workplace adjustments, absence advice and compliance checks — while health insurance funds treatment that OH can't provide. Around 69% of organisations use OH in some form. They solve different halves of the same absence problem: small firms typically buy insurance first and use pay-as-you-go OH referrals, at roughly £300–£600 per assessment, when cases arise.
- ✓Occupational health assesses fitness for work; health insurance funds private treatment. Neither does the other's job.
- ✓Around 69% of organisations use occupational health in some form — larger firms far more than small ones.
- ✓Small firms don't need an OH contract: ad-hoc referrals cost roughly £300–£600 per assessment.
Two different products for two different questions
Occupational health is a professional advisory service. An OH clinician — usually an occupational health nurse or physician — assesses an employee and answers management questions: is this person fit to work? What adjustments would help them stay in or return to work? Is their condition likely to be long-term (which matters for disability law)? How should we manage this absence? OH also handles compliance work: pre-placement health checks, health surveillance for noise, dust or vibration exposure, night-worker assessments, and driver medicals.
Health insurance is a funding mechanism. Private medical insurance pays for the diagnostics, consultations and treatment that get an ill employee better — a consultation typically within days, diagnostics in 1–2 weeks, routine surgery in 2–6 weeks, against NHS median waits of 12.4 weeks just for the referral-to-treatment clock. Insurance doesn't tell you how to manage the absence; OH doesn't pay for a scan. Around 69% of organisations use occupational health in some form — but among small companies the figure drops sharply, mostly because they assume OH requires a retainer it doesn't.
What each one covers — side by side
| Need | Occupational health | Health insurance |
|---|---|---|
| Fit note says 'may be fit for work' — now what? | Yes — assessment & adjustments advice | No |
| Employee needs an MRI and physio, fast | No | Yes — funds diagnosis & treatment |
| Health surveillance (noise, dust, HAVS) | Yes — legal compliance | No |
| Long-term absence: return-to-work plan | Yes — advice & case review | Partly — treatment side only |
| Reasonable adjustments / disability advice | Yes | No |
| Mental health: counselling & psychiatric treatment | Signposts only | Yes — if mental health cover included |
The overlap point is absence. UK employees average 9.4 sick days a year and absence costs employers around £103bn annually — and a serious absence case usually needs both products: OH to assess and plan, insurance to shorten the treatment wait that's keeping the person off. Notice too what neither covers: OH won't fund a scan, and insurance won't tell you whether a phased return on altered duties is reasonable. Employers who buy one and expect the other's job done are the ones who end up frustrated with both.
How they work together on a real absence
Take a warehouse team leader signed off with back pain, or a manager off with anxiety — between them, musculoskeletal problems and mental ill health (41% of long-term absence) dominate the long-absence statistics. A joined-up response looks like this:
- Week 1–2: refer to OH. An OH assessment establishes what the employee can and can't do, likely duration, and what adjustments — phased return, altered duties, workstation changes — would help.
- Same weeks: open the insurance route. If the company has PMI, the employee sees a GP (often a virtual GP on the policy), gets referred, and starts private physio or therapy within days rather than months.
- Ongoing: OH reviews progress. Follow-up OH advice shapes the return-to-work plan while treatment progresses; if the company has group income protection, its rehab team joins in too.
- Return: adjustments implemented. OH signs off a phased return; the employer documents it. The absence is shorter, and the file shows a fair, well-evidenced process.
Sort the insurance half in one quote
When a small firm actually needs occupational health
Most small companies don't need an OH contract or retainer. What they need is to know that pay-as-you-go OH referrals exist: national and regional providers will take a one-off management referral, assess the employee (usually by phone or video within days), and return a written report — typically for around £300–£600 per assessment. You use it when a case justifies it, and spend nothing in between.
The moments that justify a referral: an absence passing 3–4 weeks with no clear return date; repeated short absences with no obvious pattern; a fit note recommending adjustments you're unsure how to interpret; any case where a capability process might follow; and any suggestion the condition could amount to a disability. Sectors with legal health surveillance duties — construction, manufacturing, anyone with noise or vibration exposure — need scheduled OH regardless of headcount, because that part is a legal requirement, not a judgement call.
Insurance is the standing purchase; OH the on-demand one. For a 10-person firm, PMI at roughly £57 a head a month plus the occasional £400 OH referral covers both halves for less than most expect.
Which to buy first — and what fills the gaps
If you're choosing where the first pound goes: insurance first for most small firms. It's the benefit employees value, it shortens every treatable absence, and it works without management effort. Layer OH in as ad-hoc referrals from day one — no contract needed — and consider a standing OH arrangement once headcount, absence caseload or compliance duties demand it.
Two cheap additions close most remaining gaps. An EAP (often bundled free with group policies) gives early mental health support before anything reaches OH or a claim. And group income protection adds insurer-funded rehabilitation and case management for the truly long absences — effectively OH-style expertise, paid for by the insurer, on the cases that cost the most. We compare all of it alongside company health insurance so you can see the full picture priced together.
Frequently asked questions
What's the difference between occupational health and health insurance?
Occupational health assesses fitness for work and advises the employer — adjustments, return-to-work plans, compliance checks. Health insurance funds private diagnosis and treatment for the employee. OH answers 'can they work and how do we manage this?'; insurance answers 'how do they get better faster?'.
Do small businesses need an occupational health provider?
Not usually on contract. Small firms can use pay-as-you-go OH referrals — roughly £300–£600 per assessment — when a case justifies it: absences past 3–4 weeks, unclear fit notes, possible disability, or capability processes. Only firms with health surveillance duties (noise, dust, vibration) need scheduled OH regardless of size.
How much does an occupational health referral cost?
An ad-hoc management referral with a written report typically costs around £300–£600, usually delivered by phone or video within days. Physician-led assessments and specialist reports cost more. Retained OH contracts price per head or per day and only make sense once caseload or compliance duties are regular.
Can occupational health provide treatment for employees?
Generally no — OH assesses and advises rather than treats. Some larger OH services offer physiotherapy or counselling arms, but funding treatment is what health insurance (or the NHS) is for. The productive pattern is OH shaping the return-to-work plan while insurance shortens the treatment wait.
Does health insurance replace the need for occupational health?
No. Insurance can't assess fitness for work, recommend adjustments, advise on disability-law risk, or run health surveillance — and insurers won't write management reports. Equally, OH can't fund an MRI or surgery. Serious absence cases typically need both, which is why 69% of organisations use OH in some form.
When should an employer refer an employee to occupational health?
Common triggers: absence passing 3–4 weeks with no clear return date, repeated short-term absences, a 'may be fit for work' fit note you're unsure how to act on, any planned capability process, and any condition that might amount to a disability. Early referral — with the employee's consent — beats late referral in almost every case.
Is occupational health a legal requirement for employers?
Only in specific circumstances. Health surveillance is legally required where work exposes staff to hazards like noise, vibration, dust or certain chemicals, and some roles need statutory medicals. General OH advice isn't mandatory — but OH evidence is central to defending capability decisions and meeting disability-law duties.
Do occupational health reports go to the employer or the employee?
The report goes to the referring employer, but the employee must consent to the assessment and normally to the report's release, and can usually see it first. OH clinicians share fitness-for-work advice, not full medical records — clinical confidentiality is preserved throughout.
How do occupational health and group income protection work together?
Closely. GIP insurers run their own rehabilitation and case management on long absences — clinical case managers, funded physio and psychological support — which complements OH's fitness-for-work advice. Employers with GIP should notify the insurer early so its early-intervention team engages alongside any OH referral.
Should a small company buy occupational health or health insurance first?
For most small firms, insurance first: it's the benefit staff value, it shortens every treatable absence, and it needs no management input. OH doesn't require an upfront purchase at all — use ad-hoc referrals at £300–£600 when cases arise, and formalise it later if caseload grows.