What Is Occupational Health? A Complete Guide for Employers and Employees

Occupational health is a specialist branch of medicine and workplace wellbeing that looks at the relationship between work and health, and it answers two questions that matter to every employer and every employee: how does a job affect a person’s health, and how does a person’s health affect their ability to do their job safely. It is broader than a simple health check, broader than managing sickness absence, and broader than a health surveillance programme, because it covers everything from pre-employment screening and safety-critical medicals to return-to-work plans, workplace adjustments and advice on managing long-term conditions at work. In the UK, occupational health is not a single service that every employer must buy, and there is no general legal duty to run an occupational health scheme, but employers do have clear legal duties to protect their workers’ health and safety, and occupational health is one of the main ways they meet those duties. This guide explains what occupational health is, what it includes, what the law requires, and how it works in practice for both employers and employees.

Occupational Health: The Definition

Occupational health, often shortened to OH, is a medical advisory service focused on work, and it is concerned with the effects of health on work and the effects of work on health, taking into account an individual’s health, ability and fitness to perform particular jobs or workplace tasks. An occupational health professional, usually a doctor or a nurse with specialist training in occupational health medicine, assesses a specific work-related health question and gives an opinion, not an order, about what is safe and what adjustments might help. The Health and Safety Executive, the HSE, describes occupational health as having two elements: the first and most important is the effect of work on employees’ health, including identifying what can cause ill health at work and introducing control measures to prevent it, and the second is making sure that people with health conditions, a disability or an impairment are not unreasonably prevented from taking up job opportunities. Occupational health is designed to support both employers and employees, offering advice and guidance that helps keep people healthy at work and helps them return to work as early as possible after a period of sickness. It is not a GP service and it is not an accident and emergency service, and it does not replace the control of workplace hazards, which remains the employer’s responsibility.

What Occupational Health Includes

Occupational health can include a wide range of services, and the exact mix depends on the employer, the industry and the risks involved, because a construction company and an office-based business will need very different support. Health surveillance is one of the most common services, and it is a defined, risk-based system of repeated checks intended to identify work-caused ill health early, which is required where workers remain exposed to certain health risks after controls have been put in place. Safety-critical medicals are another common service, where workers in roles such as driving, working at height or operating machinery are assessed to make sure they are fit to do the job safely. Pre-employment screening is used to check whether a new starter has a health condition that might affect their ability to do the role, although the Equality Act 2010 generally bans health questions before a job offer has been made. Occupational health also covers sickness absence management, where an OH professional advises on whether an employee is fit to return to work, what a phased return might look like, and what adjustments could help, and rehabilitation, where the service helps design a plan to get someone back to work after illness or injury. Other services include advice on workplace adjustments for disabled employees, health promotion initiatives such as flu vaccination clinics or wellbeing programmes, and advice on specific exposures such as noise, vibration, dust or chemicals.

Occupational Health vs Health Surveillance: The Difference

Occupational health and health surveillance are often confused, but they are not the same thing, and understanding the difference matters because only one of them is a legal requirement in specific circumstances. Occupational health is the broad advisory service that covers the whole relationship between work and health, from fitness-for-work assessments to return-to-work planning and advice on adjustments. Health surveillance is a narrower, defined system of repeated health checks, such as hearing tests for workers exposed to noise, lung function tests for workers exposed to dust, or skin checks for workers who handle chemicals, and its purpose is to detect work-caused ill health at an early stage so that action can be taken before it becomes serious. The HSE’s guidance is clear that health surveillance is required where workers remain exposed to certain health risks after controls have been put in place, and that some hazards require statutory medical surveillance by an HSE-appointed doctor. An employer may need health surveillance only, or it may need the broader occupational health service as well, and the HSE’s guidance on buying occupational health support suggests that employers should identify which they need before they buy. The key point is that health surveillance is a specific, risk-based process with a legal trigger, while occupational health is the wider service that helps employers manage health at work in general.

Occupational Health and the Law in the UK

There is no general legal duty in the UK to run an occupational health scheme, and many small employers operate without one, but there are legal duties that often lead employers to use occupational health services. In Great Britain, section 2 of the Health and Safety at Work etc Act 1974 requires employers, so far as is reasonably practicable, to protect the health, safety and welfare of their employees, and risk assessments and competent safety assistance are required under the Management of Health and Safety at Work Regulations 1999. Where a risk assessment identifies a need, regulation 6 of those regulations requires the employer to provide appropriate health surveillance, and some specific regulations require statutory medical surveillance by an HSE-appointed doctor for particular hazards. The Equality Act 2010 also matters, because it requires employers to make reasonable adjustments for disabled employees, and occupational health advice is often how an employer works out what adjustments are reasonable. Health information is special-category data under UK GDPR, which means it must be handled with extra care, and an occupational health service will normally keep medical details confidential, sharing only the functional advice the employer needs, such as whether someone is fit for a role or what adjustments would help. The practical result is that while occupational health itself is not a legal requirement, the duties that sit around it often make it the sensible way to comply with the law.

What Happens at an Occupational Health Assessment

An occupational health assessment is a medical assessment carried out by an occupational health professional, usually a doctor or a nurse with specialist training, and it is focused on a specific question about work and health rather than on a general health check. The assessment usually starts with a conversation about the employee’s health, their job, and how the two interact, and it may include a physical examination, a review of medical records with the employee’s consent, or specific tests such as a hearing test, a lung function test or a vision test, depending on the reason for the referral. The occupational health professional then writes a report for the employer, and that report normally covers whether the employee is fit for their role, whether any restrictions apply, what adjustments might help, and what a return-to-work plan could look like. Medical details are kept confidential, and the employer is told only what it needs to know to make a decision about the work, which is an important protection for the employee. An occupational health clinician cannot make an employee attend an appointment, accept treatment or return to work on a particular date, because the service gives a medical opinion, not an order, and the employer decides what happens at work and remains responsible for making that decision lawfully. Employees who are referred to occupational health are usually told why they have been referred and what the assessment will involve, and they have the right to see the report before it is sent to the employer.

When an Employer Should Refer Someone to Occupational Health

An employer should refer an employee to occupational health when there is a specific work-related health question that needs a professional opinion, rather than as a routine step or as a way of managing a difficult situation. Common reasons for a referral include long-term sickness absence, where the employer needs to know whether the employee is likely to return and what might help them do so, and a health condition that affects the employee’s ability to do their job, where the employer needs advice on adjustments or on whether the role is still safe for them. A referral is also appropriate when an employee is returning to work after a serious illness or injury and needs a phased return or a temporary change of duties, or when a role involves a safety-critical task and the employer needs to confirm that the employee is fit to do it. The referral should be made with a clear question, such as whether the employee is fit for their current role, what adjustments would help, or what the likely timescale for a return to work is, because a vague referral produces a vague answer. Employers should also be careful not to use occupational health as a substitute for managing performance or conduct, because the service is a medical advisory service, not a management tool, and a referral that is really about performance will not produce a useful medical opinion.

Employee Rights With Occupational Health

Employees have important rights when they are referred to occupational health, and understanding those rights helps to make the process work better for everyone. An employee cannot be forced to attend an occupational health appointment, although refusing to attend may mean that the employer has to make a decision without medical advice, which may not be in the employee’s interest. An employee has the right to know why they have been referred, what the assessment will involve, and what information will be shared with the employer, and they have the right to see the occupational health report before it is sent to the employer. Medical details are confidential, and the occupational health professional should only share the functional advice the employer needs, such as fitness for a role or recommended adjustments, rather than a full medical history. If an employee disagrees with the report, they can discuss it with the occupational health professional, and they can ask for factual errors to be corrected, although the professional’s clinical opinion is their own. Employees also have rights under the Equality Act 2010, including the right to reasonable adjustments if they are disabled, and an occupational health report is often the evidence that helps an employer work out what adjustments are reasonable. If an employee feels that a referral has been made unfairly, they should raise the matter through the employer’s grievance procedure or seek advice from a union representative or from Acas.

Occupational Health Costs

The cost of occupational health depends on the size of the employer, the services needed and whether the service is provided in-house or by an external provider, and there is no single price that applies to everyone. Large employers often run an in-house occupational health service, with their own doctors and nurses, which is expensive to set up but cost-effective at scale, while small and medium employers usually buy services from an external provider on a pay-as-you-go basis or through a retained contract. A single occupational health assessment from an external provider typically costs a few hundred pounds, although the exact figure varies by provider and by the complexity of the assessment, and health surveillance programmes are usually priced per employee per year. Some providers offer a fixed-fee package that includes a set number of assessments, health surveillance and telephone advice, which can be better value for an employer that expects to use the service regularly. Employers should check whether a provider is accredited under the SEQOHS scheme, which stands for Safe, Effective, Quality Occupational Health Service, because accreditation is a useful indicator that the provider meets recognised quality standards. The cost should be weighed against the cost of not having occupational health support, which can include longer sickness absence, more expensive claims, and the risk of failing to meet legal duties.

How to Choose an Occupational Health Provider

Choosing an occupational health provider is an important decision, and the HSE’s guidance on buying occupational health support suggests that employers should start by identifying what they actually need, rather than buying a generic package. An employer should ask whether it needs health surveillance only, or whether it also needs safety-critical medicals, sickness absence advice, or help with return-to-work planning, because the answer will determine what kind of provider is appropriate. The provider’s competence matters, and employers should check that the doctors and nurses have the specialist training and experience relevant to the work, and that the provider is accredited under the SEQOHS scheme. The provider should also be clear about confidentiality, explaining what information will be shared with the employer and what will be kept private, and about how quickly it can respond to a referral, because a service that takes weeks to arrange an appointment is of limited use. Location and practicality matter too, because an employee may need to travel to the provider’s clinic, and a provider with clinics near the workplace will be more convenient than one that is far away. Finally, the employer should check the provider’s experience in its own industry, because the health risks in construction, healthcare, manufacturing and office work are very different, and a provider that understands the specific risks will give better advice.

Occupational Health and Mental Health at Work

Occupational health covers mental health as well as physical health, and this is an increasingly important part of the service, because work-related stress, anxiety and depression are now among the most common reasons for sickness absence in the UK. An occupational health professional can advise on whether an employee with a mental health condition is fit for their role, what adjustments might help, such as a change of hours, a change of duties or a phased return, and what support the employer can offer. The service can also help employers design wellbeing initiatives, such as stress risk assessments, manager training, or access to counselling through an Employee Assistance Programme, although occupational health itself is not a counselling service. It is important to remember that mental health conditions can amount to a disability under the Equality Act 2010, which means the employer may have a duty to make reasonable adjustments, and occupational health advice is often how the employer works out what those adjustments should be. Employees who are struggling with their mental health at work should be encouraged to speak to their manager, their GP or an occupational health professional, because early support is usually more effective than waiting until the problem becomes serious. The HSE also provides guidance on managing work-related stress, and employers have a legal duty to assess and manage the risk of stress at work in the same way as any other health and safety risk.

For authoritative guidance on health surveillance and occupational health, the Health and Safety Executive’s own pages are the best starting point, because they explain what the law requires and what good practice looks like. You can read the HSE guidance here: Occupational Health Guidance from the HSE.

What Is the Difference Between Occupational Health and a GP?

Occupational health and a GP serve different purposes, and understanding the difference helps employees know who to see for what. A GP is a general medical practitioner who provides primary healthcare, diagnoses and treats illness, and refers patients to specialists, and the GP’s focus is on the patient’s health in general. An occupational health professional is a specialist who focuses on the relationship between health and work, and their role is to advise the employer and the employee on whether someone is fit for a particular role, what adjustments might help, and what a return-to-work plan could look like. Occupational health does not provide general medical treatment, and it does not replace the GP, so an employee who is ill should still see their GP, and the occupational health professional may ask for information from the GP, with the employee’s consent, to inform their opinion. The key difference is that the GP works for the patient, while the occupational health professional works as an impartial adviser to both the employer and the employee, and the advice they give is about work, not about treatment.

Can My Employer Force Me to See Occupational Health?

An employer cannot force an employee to attend an occupational health appointment, because the service gives a medical opinion rather than an order, and an employee has the right to decline. However, refusing to attend can have consequences, because the employer will then have to make a decision about the employee’s fitness for work or about adjustments without the benefit of medical advice, and that decision may not be in the employee’s favour. In practice, most employees do attend, because the assessment is usually in their interest, as it can lead to adjustments, a phased return or a clearer understanding of what support is available. If an employee is worried about attending, they should discuss their concerns with their manager or with the occupational health service itself, because the service is confidential and impartial, and it is designed to support the employee as well as the employer. An employee who refuses to attend should put their reasons in writing, so that there is a clear record of why the assessment did not take place.

Does Occupational Health Tell My Employer Everything?

No, occupational health does not tell the employer everything, and confidentiality is one of the most important principles of the service. The occupational health professional will share only the functional advice the employer needs, such as whether the employee is fit for their role, whether any restrictions apply, what adjustments might help, and what a return-to-work plan could look like. Medical details, such as a diagnosis, test results or treatment history, are kept confidential and are not shared with the employer unless the employee consents. The employee normally has the right to see the report before it is sent to the employer, and can ask for factual errors to be corrected. Health information is special-category data under UK GDPR, which means it must be handled with extra care, and an occupational health service that shares medical details without consent would be breaching both professional standards and data protection law.

How Long Does an Occupational Health Referral Take?

The time taken for an occupational health referral depends on the provider, the urgency of the case and the availability of appointments, and there is no fixed timescale that applies to everyone. A straightforward referral to an external provider can often be arranged within a week or two, although the exact time will depend on how busy the provider is and whether the employee needs to travel to a clinic. Urgent cases, such as a safety-critical fitness assessment, may be arranged more quickly, while a complex case that requires information from a GP or a specialist may take longer, because the occupational health professional will need to wait for that information before they can give an opinion. Employers should ask the provider about timescales when they make the referral, and should tell the employee what to expect, because uncertainty about timing can add to the stress of being referred. If a referral is taking a long time, the employer should chase the provider and keep the employee informed, rather than leaving them waiting without an update.

Is Occupational Health Free for Employees?

Occupational health is normally paid for by the employer, and the employee does not pay for an assessment that the employer has arranged, because the service is provided for the employer’s benefit as well as the employee’s. An employee who is referred to occupational health by their employer should not be asked to pay for the assessment, and any costs associated with the referral, such as travel to the clinic, are normally covered by the employer, although the exact arrangements vary. Employees who want occupational health advice independently, rather than through their employer, would normally need to pay for a private assessment, although this is uncommon. The important point is that an employee should never be put off attending an occupational health appointment because of cost, because the employer is responsible for paying for a service that it has requested.

What Is SEQOHS Accreditation?

SEQOHS stands for Safe, Effective, Quality Occupational Health Service, and it is the accreditation scheme for occupational health providers in the UK, run by the Faculty of Occupational Medicine. A provider that holds SEQOHS accreditation has been assessed against recognised quality standards, covering areas such as clinical governance, confidentiality, competence and customer service, and accreditation is a useful indicator that the provider meets a good standard. Employers who are choosing an occupational health provider should check whether the provider is SEQOHS-accredited, because it is one of the simplest ways to distinguish a reputable provider from one that is not. Accreditation is not a legal requirement, and a provider without it may still be competent, but it is a helpful starting point when comparing providers, and the HSE’s guidance on buying occupational health support refers to competence and quality as key factors in the choice.

Conclusion

Occupational health is a specialist service that sits at the intersection of health and work, and it helps employers understand how a job affects a person’s health and how a person’s health affects their ability to do their job safely. It covers health surveillance, safety-critical medicals, pre-employment screening, sickness absence management, return-to-work planning and advice on adjustments, and it is delivered by doctors and nurses with specialist training in occupational health medicine. While there is no general legal duty to run an occupational health scheme, employers have clear duties under the Health and Safety at Work etc Act 1974 and the Equality Act 2010, and occupational health is one of the main ways they meet those duties. For employees, the service is confidential, impartial and designed to support them, and understanding how it works, what rights they have, and what to expect from an assessment makes the process less daunting. Whether you are an employer choosing a provider or an employee who has been referred, the key is to ask a clear question, to expect a clear answer, and to remember that occupational health is about keeping people healthy at work, not about judging them.

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