Employee health screening vs occupational health: what’s the difference?

If you’re looking into health checks for your staff, you’ll quickly come across two terms that sound interchangeable: occupational health and employee health screening. They aren’t the same thing, and the simplest way to tell them apart is timing.

Occupational health mostly deals with health problems that already exist, or with specific risks in the job: someone off sick, a return to work, legally required health surveillance. Employee health screening comes earlier. It’s prevention: finding the health risks that build up quietly in working-age adults while they’re still easy to treat, before they turn into illness and time off work.

This guide explains what each one covers, when occupational health is a legal requirement, and how to tell which your business needs.

The short answer

What occupational health is

Occupational health is specialist advice about the relationship between work and health. It looks in two directions: how someone’s health affects their ability to do their job, and how their job might affect their health.

Typical occupational health services include:

• Fitness-for-work assessments, for example when someone is returning after a long absence
• Sickness absence management, including advice on phased returns
• Workplace adjustments for employees with health conditions or disabilities
• Pre-employment health assessments, usually a health questionnaire after a job offer
• Health surveillance and statutory medical examinations, where the law requires them

These are the services the government’s own research on occupational health describes (gov.uk). Occupational health is delivered by occupational health nurses and physicians, usually through a specialist provider. The employer typically receives advice, such as whether someone is fit to return or what adjustments would help, rather than the employee’s detailed medical information.

Most of this work starts once something has already happened: an absence, a diagnosis, or exposure to a known risk.

When occupational health is a legal requirement

The legal part is health surveillance. The Health and Safety Executive (HSE) defines it as “a scheme of repeated health checks which are used to identify ill health caused by work”, and is clear that it “is not the same as health monitoring, health promotion or health screening” (HSE). Under the Management of Health and Safety at Work Regulations 1999, employers must provide whatever health surveillance their risk assessment shows is appropriate.

You may be legally required to provide health surveillance if your employees are exposed to:

• Noise regularly above the upper exposure action values, under the Control of Noise at Work Regulations 2005, through regular hearing checks (HSE)
• Vibration, such as from power tools, regularly above the exposure action value, under the Control of Vibration at Work Regulations 2005, usually through hand-arm vibration questionnaires and follow-up checks (HSE)
• Hazardous substances linked to a known disease, such as substances that affect the lungs or skin, under COSHH, through checks such as lung function or skin assessments (HSE)
• Asbestos, lead, ionising radiation or compressed air, where medical surveillance must be carried out by a doctor appointed by HSE

Two related duties sit alongside these. Employers must provide, and pay for, an eye and eyesight test for anyone who regularly uses display screen equipment if they ask for one (HSE). And under the Working Time Regulations 1998, employers must offer night workers a free health assessment before they start night work, and regularly after that (gov.uk).

Whether you need health surveillance depends on your risk assessment. If your team works in offices, it usually doesn’t apply beyond the eye test rule. If you’re unsure, HSE’s guidance on health surveillance is the best starting point.

What employee health screening is

Employee health screening is a preventive health check offered to staff. It isn’t linked to a specific workplace risk and it isn’t a legal requirement. Its job is to find the risk factors behind serious, long-term illness, such as raised blood pressure, high cholesterol and rising blood sugar, early enough to do something about them.

These risks are common, and because they rarely cause symptoms, most people don’t know they have them:

• High blood pressure. Blood pressure is the force of blood pushing against the walls of your arteries as your heart pumps. When it stays too high, it gradually damages and stiffens the artery walls and makes the heart work harder. Damaged arteries are more likely to narrow and become blocked by a clot, or to burst. In an artery supplying the heart, that causes a heart attack; in the brain, a stroke. Around a third of UK adults have high blood pressure, and many don’t realise it (NHS England). In England, around 4.2 million adults have it without knowing (ONS).
• Raised blood sugar. An estimated 6.3 million people in the UK have prediabetes, and a further 1.3 million have type 2 diabetes that hasn’t been diagnosed (Diabetes UK). Diabetes affects far more than blood sugar. People with type 2 diabetes are nearly 2.5 times more likely to have a heart attack and twice as likely to have a stroke, and diabetes is a major cause of kidney failure, sight loss and amputations (Diabetes UK). The effects reach work too: more appointments, more time off, and 37% of people with diabetes say it has caused them a problem at work.
• Undiagnosed heart conditions. Hundreds of thousands of people in the UK have a heart condition they don’t know about. At least 270,000 have undiagnosed atrial fibrillation (AF), an irregular heart rhythm (British Heart Foundation), and the BHF estimates 620,000 carry a faulty gene for an inherited heart condition, most without knowing (British Heart Foundation). Many have no symptoms, yet AF alone makes someone five times more likely to have a potentially fatal or life-changing stroke. An ECG can pick up AF and some other heart conditions early, when treatment can reduce the risk.

Finding these risks early matters, because acting on them works. People with prediabetes who were referred to the NHS Diabetes Prevention Programme were 20% less likely to go on to develop type 2 diabetes (NIHR).

A good employee health check covers the markers that matter most for prevention:

• Heart disease and stroke risk: cholesterol, blood pressure and resting heart rate, combined with lifestyle and family history into a 10-year heart disease and stroke risk score and a healthy heart age
• Diabetes risk: HbA1c, a blood test showing average blood sugar over the past two to three months, which picks up prediabetes and undiagnosed type 2 diabetes, plus a 10-year type 2 diabetes risk score
• Undiagnosed heart conditions: a 12-lead ECG, a recording of the heart’s electrical activity that can pick up irregular rhythms such as AF and other signs of heart problems
• Liver and kidney health, plus iron and, depending on the package, thyroid function and inflammation
• Body composition: body fat, muscle and waist-to-height ratio, which say more about health risk than weight or BMI alone
• A one-to-one lifestyle review covering sleep, diet, activity, alcohol and smoking, so each person leaves with specific changes to reduce their risk of ill health and improve their wellbeing and productivity

Each employee receives their own report, and anything that needs follow-up is explained to them directly, with advice to take it to their GP where appropriate. Health screening can flag patterns and risks, but it can’t diagnose or rule out a condition.

For the employer, the value is prevention: risks found and acted on before they can turn into illness and time off. You also receive an anonymised employer summary showing the main risks across the team, with no personal data and nothing that identifies anyone.

Why prevention matters for sickness absence

Ill health is expensive for employers. The government’s Keep Britain Working review puts the annual cost to employers of poor workplace health at around £85 billion (gov.uk). The ONS estimates that 148.8 million working days were lost to sickness or injury in 2025, an average of 4.4 days per worker (ONS).

Minor illnesses such as colds are the most common reason for sickness absence, and a health check can help here too. Low iron, which we check in every package, can leave people tired and run down, and iron is needed for a normal immune system. Sleep matters as well: in one study, people who slept six hours a night or less were more than four times more likely to catch a cold when exposed to the virus (Carnegie Mellon University). Sleep, diet and activity are all part of the one-to-one lifestyle review, so each person leaves with practical changes, not just numbers.

The bigger cost is long-term illness. A heart attack, stroke or diabetes complications can mean long periods off work, or someone leaving altogether. When that happens, the cost goes beyond sick pay: the same review found that replacing an employee lost to ill health costs employers over £11,000, including recruitment and onboarding.

How a health check helps prevent heart disease, stroke and diabetes

Heart attacks, strokes and type 2 diabetes rarely come out of nowhere. They usually build up over years:

• High cholesterol lets fatty deposits build up in the walls of the arteries, narrowing them. If a deposit breaks open, a blood clot can form and block the blood supply to the heart or brain, causing a heart attack or stroke.
• High blood pressure puts constant extra strain on the heart and artery walls, damaging them over time and speeding up that build-up.
• Raised blood sugar damages blood vessels and nerves, which is why diabetes raises the risk of heart disease, stroke, kidney disease and sight loss.
• AF lets blood pool in the heart, where clots can form and travel to the brain.

None of this usually causes symptoms until something goes wrong. A health check turns it into numbers someone can act on. Each employee gets their results, their 10-year risk of heart disease and stroke and of type 2 diabetes, and a clear plan. If cholesterol is raised, for example, that means the specific changes most likely to bring it down, such as diet, activity, alcohol and smoking, and advice on when to see their GP, who can discuss treatment such as statins. The next year’s check shows whether it’s working.

Which does your business need?

A simple way to decide:

• Your employees are exposed to noise, vibration, hazardous substances or other specific risks → you need occupational health for health surveillance. This is a legal duty, not a benefit.
• You’re managing long-term absence, a return to work, or adjustments for a health condition → you need occupational health advice.
• You want to catch health risks early and reduce the chance of staff developing serious, preventable conditions → you need employee health screening.
• Several of the above → you need both. Occupational health deals with health problems once they’re there; screening works to stop them developing.

Office-based businesses usually fall into the third group. Construction, manufacturing, warehousing and laboratories are more likely to need occupational health as well.

Is employee health screening worth it for a business?

There are a few practical reasons employers choose it:

• It’s prevention, not a perk. Raised blood pressure, high cholesterol and early changes in blood sugar are common in working-age adults and rarely cause symptoms. Screening is often the first time anyone measures them, and acting early is the best chance of preventing the illness they lead to.
• It protects against the costliest kind of absence. Long-term illness means sick pay, cover and lost output, and if someone can’t return, the cost of replacing them.
• Healthier people do better work. Good physical and mental health means more energy and better focus. People who are tired, run down or working through health problems don’t do their best work, and that cost never shows on an absence report. A healthy workforce is a happier one, and happiness pays: a University of Oxford study at BT found that happier workers were 13% more productive (University of Oxford).
• It’s tax-efficient. When the company pays for it directly, one health screening per employee per tax year is exempt from income tax, under section 320B of the Income Tax (Earnings and Pensions) Act 2003. Our guide, Are employee health checks tax-free?, explains the rules.

How we run employee health checks

We provide employee health screening, not occupational health. We don’t carry out statutory health surveillance, drug and alcohol testing, pre-employment medicals or fitness-for-work assessments. If your business needs those, an occupational health provider is the right choice.

What we do is bring a clinic-standard preventive health check to your workplace across London and the South East. Each appointment takes around 30 to 45 minutes, depending on the package, and includes venous blood tests analysed by UKAS-accredited laboratories, in-clinic measurements, 10-year heart disease, stroke and diabetes risk scores, and a one-to-one lifestyle review. The 12-lead ECG is included from the Advanced check upwards. Every employee receives a personal report, and you receive an anonymised summary of the group.

If you’d like to know more, see our corporate health screening page for packages, pilot day pricing and how an on-site day works.