The Health and Safety at Work etc. Act 1974 is the main statute governing workplace health and safety across Great Britain, and this summary of the Health and Safety at Work Act 1974 sets out what it requires, who it binds, and what non-compliance costs. In short, the Act places a broad legal duty on employers, employees, manufacturers, and anyone controlling work premises to keep people safe so far as is reasonably practicable, and it gives the Health and Safety Executive powers to inspect workplaces, order changes, and prosecute.1Health and Safety Executive. Health and Safety at Work etc Act 1974 Penalties on conviction in the Crown Court run to unlimited fines and up to two years in prison, and directors can be prosecuted personally.
The Core Duty and the “Reasonably Practicable” Test
Section 2 of the Act imposes a general duty on every employer to ensure, so far as is reasonably practicable, the health, safety, and welfare at work of all employees.2Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 2 The phrase “at work” is wider than working hours. It covers the whole time an employee is at the workplace or engaged in work activities, including breaks on site and work-related travel.
“Reasonably practicable” runs through nearly every duty in the Act. It means the employer weighs the severity and likelihood of a risk against the cost, time, and effort of removing or reducing it. A measure that is grossly disproportionate to the risk may not be required. The legal burden, though, sits on the employer to prove that compliance was not reasonably practicable. The regulator does not have to prove it was. In practice this sets a high bar for anyone claiming a precaution was too expensive or too difficult.
Section 2 breaks the general duty down into concrete requirements:
- Safe equipment and systems of work, including machinery, tools, and working methods.
- Safe handling, storage, and transport of hazardous substances.
- Information, instruction, training, and supervision to let employees work safely.
- Safe premises, including access and exit routes.
- A working environment with adequate welfare facilities.
Every employer must also prepare a written health and safety policy setting out its general approach, how responsibilities are allocated, and the specific arrangements in place. Regulations exempt businesses with fewer than five employees from the written-policy requirement, but the underlying duty of care still applies.
Who Else the Act Binds
The Act deliberately looks past the employer-employee relationship. Section 3 requires every employer to conduct their business so as not to expose members of the public, visitors, contractors, or anyone else to health and safety risks, again so far as is reasonably practicable.3Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 3 The HSE enforces this broadly, from construction site neighbours to customers in a shop.4Health and Safety Executive. Enforcement: Health and Safety at Work etc Act 1974 Section 3 Self-employed people running prescribed types of undertaking carry the same duty under Section 3(2).
Section 4 targets anyone who controls non-domestic premises used as a workplace, or who controls the means of getting in and out. That person must take reasonable measures to ensure the premises, access routes, and any equipment or substances on site are safe for the people using them.5Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 4 Where a lease or contract gives someone responsibility for maintenance or repair, that person is treated as having control. Landlords and managing agents in shared buildings sit squarely inside this section.
Section 6 places duties on anyone who designs, manufactures, imports, or supplies articles or substances for use at work. They must ensure their products are safe when used properly, carry out necessary testing, and provide adequate safety information.6Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 6 Manufacturers and designers also have a duty to research how to eliminate or reduce risks in their products, and anyone who installs or erects work equipment must ensure the installation itself does not create a danger.
What Employers Must Do in Practice
Risk Assessment
The Act sets the duty; a structured risk assessment is how you discharge it. The HSE describes a five-step process:7Health and Safety Executive. Risk Assessment: Steps Needed to Manage Risk
- Identify hazards by looking at equipment, chemicals, work practices, and the state of the premises.
- Assess the risks: who could be harmed, how likely it is, and whether existing controls are adequate.
- Control the risks by eliminating hazards where possible, or reducing them through redesigning jobs, substituting safer materials, improving procedures, or providing protective equipment.
- Record your findings if you employ five or more people, documenting the significant hazards, who is at risk, and the controls in place.
- Review the controls whenever something changes, such as new equipment, different substances, or an incident or near miss.
The recording threshold mirrors the written-policy exemption. Businesses with fewer than five employees do not have to keep written records, but they still need to carry out the assessment.
Consulting the Workforce
Recognised trade unions can appoint safety representatives from among the employees, and where those representatives request it, the employer must establish a safety committee to keep health and safety arrangements under review.2Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 2 In workplaces without union recognition, separate regulations require employers to consult employees directly on matters affecting their health and safety.
Reporting Incidents Under RIDDOR
The Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 (RIDDOR), made under the 1974 Act, require employers to report certain workplace incidents to the HSE.8Legislation.gov.uk. The Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 Failing to report is itself an offence. Reportable categories include:
- Deaths from a work-related accident, including a death within a year of a reportable work injury.
- Specified injuries: fractures other than to fingers, thumbs, and toes; amputations; crush injuries to the head or torso; serious burns covering more than 10% of the body; loss of consciousness from head injury or asphyxia; and any injury from working in a confined space that requires hospital admission for over 24 hours.
- Over-seven-day incapacitation, where an employee cannot do their normal work for more than seven consecutive days after an accident. The report must be made within 15 days.
- Injuries to non-workers who are taken directly from the scene to hospital for treatment of a work-related injury.
- Occupational diseases including occupational dermatitis, hand-arm vibration syndrome, occupational asthma, carpal tunnel syndrome linked to vibrating tools, and cancers caused by workplace exposure to carcinogens.
- Dangerous occurrences: specified near-miss events that could have caused serious harm.
Accidents causing more than three days of incapacitation must be recorded in the workplace accident book but do not need to be reported to the HSE.9Health and Safety Executive. Types of Reportable Incidents The three-day recording threshold and the seven-day reporting threshold trip up a lot of employers.
First Aid
The Health and Safety (First-Aid) Regulations 1981 require every employer to provide adequate and appropriate first-aid equipment, facilities, and trained personnel.10Health and Safety Executive. First Aid Legislation What counts as adequate depends on the nature of the work, the hazards involved, and the size of the workforce. A small office and a chemical plant need very different provisions. Employers must assess their first-aid needs rather than buy a standard kit and assume it is enough. These regulations apply to all workplaces, including those with fewer than five employees. There is no legal duty to provide first aid for non-employees such as visitors or members of the public, but the HSE recommends including them in the assessment.
What Employees Must Do
Section 7 requires every employee to take reasonable care for their own health and safety and for the safety of anyone else affected by what they do or fail to do at work.11Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 7 Employees must also cooperate with the employer so far as is necessary to help the employer meet its own legal obligations. In practice that means following safety procedures, using protective equipment as instructed, and reporting hazards.
Section 8 goes further and applies to every person, not just employees. No one may intentionally or recklessly interfere with or misuse anything provided for health, safety, or welfare.12Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 8 Tampering with a fire extinguisher, disabling a machine guard, or removing warning signs all fall inside this prohibition. “Recklessly” is important. You do not need to intend harm; acting without caring whether you create a danger is enough to breach the duty.
Protection for Raising Safety Concerns
Employees who raise genuine safety concerns are protected under the Public Interest Disclosure Act 1998. An employee dismissed for reporting a health and safety breach is treated as automatically unfairly dismissed. Workers who suffer lesser consequences, such as being overlooked for promotion, having hours cut, or facing bullying, can bring a claim for detriment.13Acas. Whistleblowing at Work The deadline for bringing a claim to an employment tribunal is three months minus one day from the date of the dismissal or detrimental treatment. Employees claiming unfair dismissal for whistleblowing can apply for interim relief but must do so within seven days of their termination date.
Enforcement by the HSE
The Act created the Health and Safety Executive as Britain’s national regulator.14GOV.UK. Health and Safety Executive HSE inspectors carry out the day-to-day enforcement.
Section 20 gives inspectors broad powers of investigation. They can enter any workplace at any reasonable time without giving advance notice, or at any time if they believe a dangerous situation exists.15Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 20 On site, they can carry out examinations, take photographs, require the production of documents, and seize equipment or substances for testing. They can question anyone they believe has relevant information and require that person to sign a declaration confirming the truth of their answers. Obstructing an inspector is a separate criminal offence.
Improvement and Prohibition Notices
An improvement notice is issued when an inspector believes a legal provision is being contravened, or has been contravened in circumstances making a repeat likely. The notice specifies what is wrong, explains why, and sets a deadline to put it right.16Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 21
A prohibition notice is more severe. An inspector issues one where activities involve, or will involve, a risk of serious personal injury. It can take effect immediately or at the end of a specified period, and it stops the dangerous activity until the underlying problem is resolved.17Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 22 A prohibition notice does not require the inspector to identify a specific legal breach. The risk of serious injury alone is enough.
Anyone served with either notice can appeal to an employment tribunal. The rules differ in one critical respect. Appealing an improvement notice automatically suspends it until the appeal is decided. Appealing a prohibition notice does not, unless the tribunal specifically orders a stay.18Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Section 24 A business hit with a prohibition notice cannot simply appeal and carry on working. The dangerous activity stays shut down unless a tribunal agrees otherwise.
Penalties
The penalty regime was strengthened by the Health and Safety (Offences) Act 2008, which made most offences triable in either a magistrates’ court or the Crown Court.19Legislation.gov.uk. Health and Safety (Offences) Act 2008 For the most common offences, including breaches of the employer duties in Sections 2 to 6 and contravention of enforcement notices, the Crown Court maximum is an unlimited fine, up to two years’ imprisonment, or both.20Legislation.gov.uk. Health and Safety at Work etc Act 1974 – Schedule 3A In a magistrates’ court, the maximum is a £20,000 fine and up to 12 months’ imprisonment.
Courts sentencing organisations use guidelines that tie the starting point for fines to the company’s annual turnover and the seriousness of the offence. For a large organisation with turnover of £50 million or more, a fatal or near-fatal incident involving very high culpability carries a starting-point fine of £4 million, with a range up to £10 million.21Sentencing Council. Health and Safety Offences, Corporate Manslaughter and Food Safety Offences Definitive Guideline Smaller organisations face proportionally lower starting points. For individuals, the Sentencing Council guidelines set a maximum of two years’ custody, with the offence range spanning from a conditional discharge upward depending on culpability and harm.22Sentencing Council. Individuals: Breach of Duty of Employer Towards Employees and Non-Employees
Personal Liability of Directors and Officers
Section 37 stops senior individuals hiding behind the corporate structure. Where an offence by a company is proved to have been committed with the consent or connivance of a director, manager, secretary, or similar officer, or to be attributable to their neglect, that individual is personally guilty of the same offence and can be prosecuted and punished accordingly.23Legislation.gov.uk. Health and Safety at Work etc Act 1974 A director who knows about a serious risk and does nothing faces the same maximum penalties as the company, including imprisonment.
Fee for Intervention
The HSE also operates a cost-recovery scheme called Fee for Intervention. When an inspector finds a material breach of health and safety law, the business must pay for the time the HSE spends identifying the problem and helping put it right.24Health and Safety Executive. What Is Fee for Intervention? A material breach is one serious enough for the inspector to notify the business in writing, whether through a notification of contravention, an improvement notice, or a prohibition notice. From April 2026, the hourly rate is £188, covering site visits, investigations, report writing, and follow-up work. Compliant businesses pay nothing.
How the Act Is Filled In
The 1974 Act is enabling legislation. It sets out broad duties and gives the Secretary of State power to create detailed regulations through statutory instruments without needing fresh primary legislation. That is what makes the framework adaptable. The Management of Health and Safety at Work Regulations 1999 fill in the technical detail, requiring formal risk assessments, competent safety advisers, and emergency procedures.25Legislation.gov.uk. The Management of Health and Safety at Work Regulations 1999 Other regulations cover workplace temperature, display screen equipment, construction sites, and hazardous substances.
The HSE also publishes Approved Codes of Practice (ACOPs). These are not law in themselves, but they carry special legal weight. If you are prosecuted for a health and safety breach and the court finds you did not follow the relevant ACOP, you will be found at fault unless you can prove you met the legal requirement some other way.26Health and Safety Executive. Legal Status of HSE Guidance and ACOPs On the specific topic they cover, ACOPs effectively reverse the burden of proof. Treating them as optional is a gamble that rarely pays off.