Office and Workplace Fire Door Requirements: The Rules Explained

Do offices legally need fire doors, and which law applies?

An office or workplace in England and Wales is regulated for fire safety by the Regulatory Reform (Fire Safety) Order 2005 — usually shortened to the Fire Safety Order or RRO. Under Article 3, the responsible person in a workplace is 'the employer, if the workplace is to any extent under his control', and otherwise whoever else controls the premises. GOV.UK's guidance for businesses puts the same list plainly: the duty can fall on an employer, owner, landlord, occupier or 'anyone else with control of the premises, for example a facilities manager, building manager, managing agent or risk assessor'.

The Fire Safety Order does not contain a checklist that says 'an office must have this many fire doors'. Instead it requires the responsible person to make a suitable and sufficient fire risk assessment and to put in place, and maintain, the general fire precautions the assessment shows are needed. Fire doors are one of those precautions. What actually determines where they go is two things working together: the fire risk assessment for the occupied building, and the building's original design under the Building Regulations — either the prescriptive route in Approved Document B or the risk-based route in BS 9999.

This matters because a great deal of confusion comes from mixing up the two regimes that govern buildings. The Fire Safety Order governs how a building is *used and managed* once occupied. The Building Regulations and their approved documents govern how a building is *designed and built*. Offices sit squarely inside the first regime and are designed under the second — and neither of them imposes the fixed statutory door-check intervals that apply to tall residential blocks.

Where are fire doors needed in an office?

Fire doors earn their place by doing one of two jobs: protecting the routes people use to escape, and holding the compartment lines that stop a fire spreading through the building. The government's fire safety risk assessment guide for offices and shops puts it this way: 'Depending on the findings of your fire risk assessment, it may be necessary to protect the escape routes against fire and smoke by upgrading the construction of the floors, ceiling and walls to a fire-resisting standard.' Fire doors are the openings in those fire-resisting walls.

Escape routes and stairways

The single most important job of an office fire door is to keep the escape route tenable. Approved Document B's principle is that a fire door affording access to an escape route should provide at least 30 minutes' fire resistance, and doors on corridors and stairways where smoke control matters are usually specified as FD30S — the 'S' denoting the cold-smoke seals that limit smoke leakage as well as fire. An FD30 door offers 30 minutes of integrity, which corresponds broadly to E30 under BS EN 13501-2 rather than the insulation-plus-integrity EI30 — a distinction explained in our guide to fire door ratings and FD30 vs FD60.

Self-closing and compartmentation

A fire door only works closed, so fire doors on escape routes and compartment lines in a workplace are normally fitted with self-closing devices. The offices and shops guide is blunt about the failure mode it sees most often — 'poorly maintained and damaged fire doors or fire doors being wedged open' — and asks that staff understand 'the importance of keeping fire doors closed to prevent the spread of fire, heat and smoke'. Where a door genuinely needs to stand open for traffic flow, that must be done with a controlled hold-open or free-swing device that releases the door on a fire alarm, never a wedge. Our guide to fire door self-closers covers the acceptable devices.

How often must office fire doors be checked?

The legal duty is continuous, not periodic. Article 17 of the Fire Safety Order requires the responsible person to ensure that the premises and 'any facilities, equipment and devices' — fire doors included — 'are subject to a suitable system of maintenance and are maintained in an efficient state, in efficient working order and in good repair'. The Order does not attach a number to that duty for offices. The interval is set by the fire risk assessment, chosen on the basis of how the doors are used and how often faults appear.

There is, however, well-established good practice to anchor the assessment against. The government's offices and shops guide sets out a routine of operational checks: as part of monthly checks it asks the responsible person to 'check that fire doors are in good working order and closing correctly and that the frames and seals are intact', and annually that 'all structural fire protection and elements of fire compartmentation should be inspected and any remedial action carried out'. On top of those user checks, the fire door code of practice BS 8214 recommends examining door leaves and frames at roughly six-monthly intervals as a baseline, tightening the interval for high-traffic or high-risk doors.

In practice most offices land on a layered schedule: frequent, quick user checks by staff, and a more thorough periodic inspection by a competent person. High-footfall doors — main entrances, kitchen doors, doors held by heavy self-closers — justify shorter intervals than a rarely-used riser cupboard. The point to hold on to is that all of these frequencies are good practice, not statute: none of them is a legal minimum for offices in the way Regulation 10's intervals are for tall residential blocks.

Whatever intervals you set, keep dated records of each check and any remedial work. Our guides to fire door inspection and how often fire doors should be inspected set out what a competent inspection covers.

Do offices have to follow the 3-monthly and 12-monthly fire door checks?

No — and this is the most common myth about office fire doors. The quarterly and annual intervals people quote come from Regulation 10 of the Fire Safety (England) Regulations 2022. That regulation applies only to a building 'which contains two or more sets of domestic premises and which is above 11 metres in height'. An office is not domestic premises, so Regulation 10 simply does not bite on it, however tall the office building is.

The confusion is understandable. Regulation 10 was introduced after Grenfell, it is widely reported, and its neat intervals look like a universal rule. They are not. For an office, there is no equivalent statutory clock — the governing duty is the open-ended Article 17 obligation to maintain, and the intervals are whatever the fire risk assessment sets. Adopting Regulation 10-style frequencies voluntarily is perfectly sensible good practice, but no inspector will cite an office under Regulation 10, and treating it as the office standard risks under- or over-doing the checks a specific building actually needs.

A mixed-use building — flats above offices, say — can contain both regimes at once. The residential part above 11 metres attracts Regulation 10 for its communal and flat entrance doors; the commercial part does not. Our guide to Regulation 10 fire door checks explains exactly which doors fall inside it.

What signage do office fire doors need?

A fire door that is meant to be kept closed must say so. Under the Health and Safety (Safety Signs and Signals) Regulations 1996, safety signs are required wherever a risk has not been avoided by other means, and in practice that means a 'Fire door keep shut' sign — the blue mandatory-action pictogram, conforming to BS 5499 — on each self-closing fire door in an office. Doors that are locked shut carry 'Fire door keep locked', and a door held open by an automatic device carries 'Automatic fire door keep clear'. Signs are normally fixed at eye level on both leaf faces so the message is seen from either side.

Signage is not just decoration — it is part of the management regime that keeps the door doing its job. It tells staff and visitors not to wedge or prop the door, and it prompts the daily reality check that stops a fire door being defeated. It sits alongside the wider escape-route signage the offices and shops guide expects: exit doors on escape routes should be clearly indicated and 'quickly and easily openable without the need for a key'. Our fire door signage guide sets out the full set of notices and where each belongs.

Who is responsible for office fire doors, and what must they do?

In a single-occupier office the employer is almost always the responsible person for the whole workplace. In a multi-tenanted building, each tenant employer holds the role for the space it controls, and the landlord or building manager usually holds it for the shared areas — the common stairs, lobbies and their fire doors. Where more than one responsible person exists, the Fire Safety Order requires them to cooperate and coordinate, which in practice means agreeing in writing who checks, maintains and records each shared fire door so none falls between two duty holders. Our guide to who the responsible person is works through the split in detail.

For fire doors specifically, the responsible person's duties come down to a short, practical list:

• Assess. Identify in the fire risk assessment which doors are fire doors, what they protect, and how often they should be checked.
• Maintain. Keep every fire door 'in an efficient state, in efficient working order and in good repair' under Article 17 — closing fully, latching, with intact seals and correct gaps.
• Check and record. Carry out the operational checks and periodic inspections the assessment sets, and keep dated records of the checks and any remedial work.
• Sign and manage. Fit and maintain 'Fire door keep shut' signage, and stop fire doors being wedged, propped or altered.
• Inform and train. Make sure staff understand why fire doors must stay closed and know not to defeat them, as the offices and shops guide requires.
• Use competent people. Have significant fire door work and inspection carried out by someone competent — see who can install fire doors.

These duties are backed by criminal law: failings that put people at risk of death or serious injury in a fire are offences under the Fire Safety Order, and fire and rescue authorities can issue enforcement notices requiring specific problems to be put right. As a pre-launch knowledge base we set out the standards rather than certify any building — but the practical defence for any office is the same: know which doors are fire doors, keep them maintained, and keep dated evidence that the checks actually happen. For the wider question of when fire doors are legally required, see are fire doors a legal requirement.