Legionnaires’ Disease Compensation Claims

Updated July 2026

Legionnaires’ disease is a serious, potentially life‑threatening illness and if you’ve contracted it at work due to unsafe workplace conditions, you may want to seek Legionnaire’s Disease compensation. It is a form of serious pneumonia and you can contract Legionnaire’s Disease by inhaling small droplets of water contaminated with legionella bacteria. It typically occurs in large buildings where air-conditioning systems have not been properly maintained and managed.

Here’s a look at how claims for Legionnaire’s Disease work, when is employer negligence involved and the steps to take if you want to claim compensation.

How Does Workplace Exposure to Legionnaire’s Happen?

Water droplets containing Legionnaire’s bacteria are usually airborne, meaning you can breathe them in without even realising it. In a workplace setting, exposure tends to come from poorly maintained water systems which may include:

• Cooling towers
• Air‑conditioning units
• Hot and cold water systems
• Industrial humidifiers
• Spa pools or hydrotherapy equipment
• Decorative fountains or water features

According to the UK’s Health and Safety Executive (HSE), certain conditions increase the risk of Legionnaire’s. This can include stagnant, warm water which is stored and/or recirculated and if there are deposits in the water which may support bacterial growth by providing a nutrient source. These may include rust, sludge or scale.

When employers fail to maintain safe water systems, the bacteria can multiply and spread through the air, putting workers at risk. Because symptoms often resemble flu or pneumonia, many people don’t immediately realise their illness is linked to workplace exposure.

When Does Employer Negligence Play a Role?

Employer negligence is generally the cause behind Legionnaires’ Disease in the workplace. UK employers have a legal duty under the Health and Safety at Work Act 1974 and Control of Substances Hazardous to Health Regulations (COSHH) to assess, manage, and control the risk of Legionella bacteria which cause the disease. Negligence may be present if your employer failed to:

• Carry out regular Legionella risk assessments
• Maintain water systems to safe standards
• Flush unused pipework or outlets
• Monitor water temperatures
• Treat water systems with biocides or other control measures
• Keep accurate maintenance and inspection records
• Taking prompt action after identifying a Legionella risk

If any of these duties were breached and you contracted Legionnaires’ Disease as a result, you may be entitled to compensation.

Symptoms For Legionnaires’ Disease

Legionnaires’ Disease can escalate quickly, so recognising symptoms matters. According to Asthma and Lung UK, Legionnaire’s is not a common disease, affecting 1 in 100,000 people a year in the UK. However, it is more common between July and September each year.

Common symptoms can include:

• High fever
• Persistent cough
• Shortness of breath
• Chest pain
• Flu-like symptoms

If you or a loved one has developed these symptoms after working near water systems, cooling units, or industrial humidifiers, it’s important to seek medical attention straight away.

How to File a Personal Injury Claim for Legionnaires’ Disease

1. Seek urgent medical treatment

Your health should always come first. Legionnaires’ Disease may require hospital care, antibiotics, and respiratory support. Medical records will also form essential evidence in your claim.

2. Report your illness to your employer

Notify your employer in writing as soon as possible. This creates a formal record and triggers their legal obligation to investigate.

3. Document your working conditions

Make notes about any water systems you worked near, any unusual smells, visible rust, leaks, or lack of maintenance. If colleagues have similar symptoms, record that too.

4. Gather evidence of employer negligence

This may include:

• Maintenance logs
• Risk assessments
• Emails raising concerns
• Witness statements
• Photographs of unsafe systems

Even if you don’t have access to all of this, a solicitor can obtain it during the investigation.

5. Contact a specialist personal injury solicitor

Legionnaires’ Disease claims are medically and technically complex. We partner with solicitors who are highly experienced in work injury claims. They will assess your case, gather evidence, liaise with medical experts, and build a strong claim.

6. Undergo an independent medical assessment

This confirms the severity of your illness, your recovery prospects, and any long‑term complications such as lung damage or chronic fatigue.

7. Your solicitor submits the claim

They will present evidence showing:

• Your employer owed you a duty of care
• They breached that duty
• The breach caused your illness
• You suffered physical, emotional, and financial harm

What Compensation Can You Claim for Legionnaire’s Disease?

Compensation for workplace‑related Legionnaires’ Disease typically covers:

• Pain, suffering, and loss of amenity
• Loss of earnings
• Future loss of earnings if your ability to work is affected
• Medical expenses
• Rehabilitation and therapy
• Travel costs
• Care and support needs
• Long‑term respiratory damage
• Psychological impact

If a loved one has died from Legionnaires’ Disease, you may also be able to claim for dependency, funeral costs, and bereavement damages.

Why Legionnaires’ Disease Claims Are Different from Other Workplace Illness Claims

Legionnaires’ Disease claims require specialist investigation because:

• The bacteria is environmental and linked to water systems
• Employers are legally required to follow strict Legionella control regulations
• Exposure may often affects multiple workers
• Symptoms can be mistaken for other illnesses
• Long‑term lung damage is common

This makes expert legal guidance essential to prove how and why it was caused at work. Your solicitor will also have the experience needed to secure maximum compensation for your claim.

Real‑World Example of Legionnaires’ Disease Outbreaks

The following two outbreaks show how hazardous an outbreak of Legionnaire’s Disease can be, not only in the workplace, but also to the public at large:

Edinburgh Outbreak

The UK’s Water Hygiene Centre reported a Legionnaire’s Disease outbreak in the summer of 2012 which resulted in 56 confirmed cases, 36 suspected cases and 4 fatalities. While the source of the outbreak was never confirmed, it was suspected it may have come from an area where there were a number of industrial cooling towers situated close to a densely populated residential area. Both the Health and Safety Executive (HSE) and City of Edinburgh Council issued improvement notices on the safe management of water systems.

Cumbria Outbreak

Another well-known outbreak of Legionella happened in Barrow-In-Furness in Cumbria I August 2002. According to the Health and Safety Executive (HSE), there were 7 deaths and 180 reported cases following the outbreak at an arts and leisure facility.

What You Should Do Next

If you suspect your illness was caused by workplace exposure, take these steps immediately:

• Get medical confirmation of Legionnaires’ Disease
• Write down everything you remember about your working environment
• Speak to colleagues as they may have similar symptoms
• Contact a specialist solicitor for advice

The sooner you act, the stronger your claim will be as prompt action allows you to gather evidence before it is lost or mislaid.

Get Help Today – Free Consultation

If you or a loved one has suffered from Legionnaires’ Disease due to unsafe workplace conditions, you don’t have to go through the process alone. We work with specialist solicitors who can guide you through every stage, from gathering evidence to securing compensation to help you get your life back on track.

They offer an initial, free consultation, as well as No Win No Fee agreements.

Call our friendly team on 0333 358 3034. Alternatively, complete our online contact form.

About Our Legal Expert: This content is produced with oversight by Michael Jefferies, Managing Director who has over 30 years’ legal experience.

Written by Tanya Waterworth, Digital Content Writer