The Health and Safety at Work etc. Act 1974 — commonly shortened to HASAWA — is the primary piece of UK legislation governing health and safety in the workplace. You may also see it called HSWA, the Health and Safety Act 1974, or simply 'the 1974 Act'. Whatever the label, they all refer to the same law.
At its core, HASAWA places a legal duty on employers to prevent harm to workers and anyone else affected by work activities, "so far as is reasonably practicable." This means employers must do everything reasonable — considering time, cost, and difficulty — to keep people safe. Crucially, the Act also gives employees their own legal responsibilities: they must take care of themselves and others, follow training, and not interfere with safety measures.
One of the Act's great strengths is that it is principle-based rather than prescriptive. Instead of listing detailed rules for every situation, it sets out broad duties that apply to all workplaces. This is exactly why HASAWA still works today — whether the workplace is a factory floor, a construction site, a school, or a home office.
Before 1974, the UK relied on a patchwork of sector-specific laws — separate regulations for factories, offices, shops, mines, and railways. These older rules were narrow and rigid. For example, factory workers and miners had some protections, but chemical plant workers or office staff often had little or none. Members of the public exposed to workplace hazards were largely unprotected too.
A series of tragedies exposed serious gaps in this system. In the James Watt Street fire in Glasgow (1968), 22 factory workers died after being trapped behind barred windows. In 1974, the same year the Act came into force, the Flixborough chemical plant explosion killed 28 people and injured 36, highlighting the dangers of operating complex industrial sites without comprehensive safety law.
HASAWA replaced the patchwork with one unified, flexible framework that applied to all workplaces. Instead of prescribing specific rules for each industry, it established broad duties that apply everywhere. It also extended protection to the public for the first time.
HASAWA sets out the legal framework for managing workplace health and safety across Great Britain. It requires employers to take reasonable steps to protect the health, safety, and welfare of employees and anyone who could be affected by their work. That means providing safe systems of work, safe equipment, adequate training, clear information, and a safe working environment.
The Act applies broadly to:
| # | Employer Responsibilities | Employee Responsibilities |
|---|---|---|
| 1 | Maintain safe workplaces and equipment | Take reasonable care for own health and safety |
| 2 | Carry out regular risk assessments | Follow health and safety training and procedures |
| 3 | Provide safe systems of work | Report hazards, defects, or unsafe practices |
| 4 | Provide information, instruction, and training | Use PPE and equipment properly |
| 5 | Consult with employees or safety reps | Avoid interfering with or misusing safety measures |
HASAWA is enforced by the Health and Safety Executive (HSE), the national regulator for workplace health and safety, and by local authorities for lower-risk workplaces such as offices, shops, warehouses, and hospitality. The HSE focuses on higher-risk industries including construction, manufacturing, energy, and healthcare.
HSE inspectors have significant powers. They can enter premises, investigate incidents, take samples, and issue two types of enforcement notice:
Improvement Notice — requires the employer to fix a specific breach of the law within a set time (usually at least 21 days). The business can continue operating while the improvement is made.
Prohibition Notice — requires the employer to STOP a dangerous activity immediately. The activity must not resume until the risk has been eliminated. This is used when there is a risk of serious personal injury.
Where serious breaches occur, the HSE can bring criminal prosecutions, which can result in heavy fines and even imprisonment. Employers also face a Fee for Intervention (FFI) charge — currently £188 per hour (from April 2026) — when inspectors find material breaches during visits.
HASAWA is the 'umbrella' Act. Beneath it sit several supporting regulations (statutory instruments) that provide more specific requirements. Here are the most important ones that most workplaces need to know about:
Require employers to carry out risk assessments, appoint competent persons, plan for emergencies, provide training and supervision, and consider vulnerable workers (young, new, or pregnant employees).
Employers must provide suitable PPE when risks cannot be eliminated by other means, ensure it fits properly and is CE-marked, and train employees in correct use. Employees must wear PPE as instructed and report any defects.
Requires employers to report to the HSE: work-related deaths, specified injuries (fractures, amputations, serious burns), occupational diseases, and dangerous occurrences (near misses). In spring 2026, the HSE opened a consultation on the first major overhaul of RIDDOR since 2013.
Employers must avoid hazardous manual handling where possible, assess unavoidable tasks, and reduce risks through mechanical aids or task redesign. Employees must follow safe handling practices.
One of the most active regulations under the Act in 2026. The HSE consulted on reforms to survey quality and clearance checks. However, in May 2026, the HSE confirmed the exposure control limit will stay at 0.1 fibres per cubic centimetre, as no clear evidence supported lowering it.
Employers must carry out workstation assessments, provide ergonomic equipment, ensure staff take regular breaks, offer free eye tests, and train staff on safe use of screens and workstations.
A common question is whether there is a newer Health and Safety at Work Act. The answer is no. The 1974 Act remains the current and latest version. It has never been replaced — instead, it has been kept up to date through amendments and supporting regulations.
The Act has stood the test of time because of its principle-based approach. The requirement to do what is "reasonably practicable" has allowed the law to adapt to new industries and risks for over 50 years. However, working life in 2026 looks very different from the 1970s, and there are strong arguments for refreshed guidance in several areas:
In summary, HASAWA is legally unchanged and still effective, but employers should proactively address modern challenges — wellbeing, technology, remote work — rather than waiting for legal reform. The RIDDOR consultation outcome and the new standalone Building Safety Regulator are the most concrete developments to monitor in 2026.
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