Health and Safety at Work etc. Act 1974 — the framework everything else hangs from

What it requires

The Act imposes general duties rather than specific requirements. The central one, in section 2, is that every employer must ensure, so far as is reasonably practicable, the health, safety and welfare at work of their employees. Section 3 extends a comparable duty to people who are not employees but may be affected. Section 4 addresses those in control of premises, and section 7 places duties on employees themselves.

Two things give the Act its reach. The qualifier "so far as is reasonably practicable" requires a weighing of risk against the cost and effort of reducing it, which is why the same duty produces different answers in different settings. And section 15 gives the power under which almost every subsequent set of health and safety regulations has been made — which is why an Act from 1974 remains the framework the modern system hangs from.

What this means in practice

For most organisations the Act is not the document you consult for a specific question; the regulations made under it are. But it is the document that determines whether a duty exists at all, and it is the one enforcement is ultimately brought under.

For fire safety specifically, note the boundary: the fire risk assessment duty in England and Wales sits in the Fire Safety Order, not here. The Act and the Management Regulations made under it govern the wider health and safety management system within which fire safety arrangements sit.

Jurisdiction — more involved than "Great Britain"

"The Act extends to Great Britain" is a serviceable shorthand and is not quite the whole truth.

Section 84 frames it negatively: the Act does not extend to Northern Ireland, except Parts I and IV so far as necessary to enable regulations under sections 15 or 30 to be made and operate, and paragraph 3 of Schedule 9. That narrow carve-in is real, which is why Northern Ireland appears in the recorded extent alongside Great Britain. Separately, Part III — except section 75 and Schedule 7 — does not extend to Scotland. And application can be extended offshore by Order in Council.

Northern Ireland's own regime is the Health and Safety at Work (Northern Ireland) Order 1978.

Where it stands

In force and extensively amended over five decades. One outstanding effect was recorded when checked: a new section 51B to be inserted by Schedule 3 to the Building Safety (Wales) Act 2026, made but not yet applied to the revised text — so the text on the official site is known not to incorporate it yet. The revised text was stated as current to 26 July 2026.