Emergency lighting is required wherever workplace safety law or building regulations demand it. Across the EU, the Workplace Directive 89/654/EEC requires emergency lighting for escape routes and exits that need illumination, and national building codes add specific rules for buildings such as places of assembly, shops, hotels, schools, high-rise buildings, large car parks and hospitals. For an individual building, the decisive documents are the building permit and the fire safety strategy.
What does "emergency lighting is mandatory" actually mean?
Emergency lighting is lighting that operates when the normal power supply fails. What the law normally requires is not emergency lighting in the broadest sense but emergency safety lighting: the part of emergency lighting that allows people to leave a building safely or to shut down a dangerous activity. Standby lighting, which allows normal work to continue during a power cut, is usually a voluntary business decision. All categories are explained in types of emergency lighting.
In most European countries the obligation comes from two independent bodies of law:
- Occupational safety law, which protects employees. At EU level this is based on the Workplace Directive 89/654/EEC; each country transposes it into national rules.
- Building regulations, which protect everyone who uses a building, including visitors, guests, customers, pupils and patients. These are national or regional and differ considerably.
A building can be subject to both at the same time. In that case the stricter requirement applies.
When does workplace law require emergency lighting?
The EU Workplace Directive states that emergency routes and exits requiring illumination must be provided with emergency lighting of adequate intensity in case the normal lighting fails. National rules turn this into practical criteria.
Example Germany: the Workplace Ordinance (ArbStättV) is specified by the technical rules ASR A2.3 (escape routes and emergency exits) and ASR A3.4 (lighting and visual communication), into which the former ASR A3.4/3 on safety lighting has been incorporated. Safety lighting is required when the employer's risk assessment shows that employees cannot leave the workplace safely if the general lighting fails. Typical indicators are:
- a large number of people in one area
- large, confusing floor areas or complex escape routes
- rooms without sufficient daylight, or use during darkness such as shift work
- many people unfamiliar with the building, for example agency staff or visitors
- workplaces with special risks, such as running machinery, laboratories or hot processes
- escape routes via stairs, level changes or windowless areas
The risk assessment is therefore not a formality but the actual legal basis of the decision. If you decide against emergency lighting, document clearly why safe evacuation is possible without it.
Practical tip: Review the risk assessment after every refurbishment, change of use or move to shift work. A warehouse used only in daytime may suddenly need safety lighting once a night shift is introduced.
When do building regulations require emergency lighting?
Ordinary dwellings and small offices are usually not required to have safety lighting under building law. The picture changes for buildings with special use or high occupancy, which most countries regulate in separate rules. The German model regulations illustrate the typical scope; the German states have implemented them with some variations, and other countries use different thresholds.
| Building type | German model regulation | Typical scope |
|---|---|---|
| Places of assembly | MVStättV | assembly rooms for more than 200 visitors, open-air venues for more than 1,000 |
| Retail premises | MVkVO | sales areas totalling more than 2,000 m² |
| Hotels and accommodation | MBeVO | more than 12 guest beds |
| Schools | MSchulbauR | general and vocational schools, depending on the state |
| High-rise buildings | MHHR | floor of a habitable room more than 22 m above ground |
| Car parks | MGarVO | mainly enclosed large garages (more than 1,000 m² usable area) |
| Hospitals, care homes | state law, individual permit, DIN VDE 0100-710 for medical locations | per fire safety strategy |
Buildings without a dedicated regulation, such as large industrial halls or nurseries, can still be classified as special buildings. The building authority then sets requirements case by case, usually through the fire safety strategy. Other countries apply their own national systems and thresholds.
Why are the building permit and fire safety strategy decisive?
For a specific building, general lists matter less than the documents that belong to it. The fire safety strategy (in Germany the Brandschutzkonzept) describes how the building meets its fire protection objectives; it often specifies where safety lighting is required, which rated duration applies and whether self-contained or central battery systems are intended. The building permit makes these requirements binding.
If the actual building no longer matches the approved strategy, for example because escape routes have moved or rooms have been repurposed, the installation may no longer be compliant even if every luminaire works. Required durations are covered in emergency lighting duration.
What is the difference between escape lighting and exit signs?
The two are often treated as one, but they are separate requirements:
- Exit signs are green safety signs to ISO 7010 that show the way out. Under the EU Safety Signs Directive 92/58/EEC and national rules, escape routes must be signed where their location, extent or use requires it, regardless of whether safety lighting is mandatory.
- Escape route lighting ensures the route itself is lit during a power failure, under EN 1838 normally at least 1 lx along the centre line.
Where safety lighting is required, exit signs must also remain visible during a power failure, either internally illuminated or externally lit. Where it is not required, non-illuminated or photoluminescent signs are often sufficient. Size and placement are covered in exit sign viewing distance.
How do you find out whether your building needs emergency lighting?
A structured approach that works in practice:
- Check the permit documents: building permit, conditions and fire safety strategy. If they specify safety lighting, the question is settled.
- Clarify use and building category: does the building, or part of it, fall under a special building regulation?
- Carry out or update the risk assessment for workplaces, using the national criteria.
- Survey the existing installation: which luminaires and signs exist, which work, how long do they last?
- Close the gaps: design to EN 1838, installation and operation to EN 50172 plus any national supplement.
NOTLUX therefore starts every project with an on-site survey that compares the documents with the actual building. Which standards apply in detail is set out in the overview of standards.
What applies after installation?
The obligation does not end with installation. Safety lighting must be tested regularly and the tests recorded: a monthly function test and an annual full-duration test under EN 50172, plus daily indicator checks for central systems. Many countries add periodic inspections by experts or authorities for special buildings. See testing intervals and operator duties and liability.
This article is a general overview and is not legal advice. The national and regional rules for your building, the building permit and the fire safety strategy are binding.
Frequently asked questions
Does every office need emergency lighting?
Not automatically. In offices, the employer's risk assessment decides whether staff can leave safely during a power failure. For large, internal or complex office floors, the answer is frequently yes.
Do residential buildings need emergency lighting?
Ordinary residential buildings are usually not required to have safety lighting. Common exceptions are high-rise buildings and buildings whose permit or fire safety strategy requires it. Associated large car parks may have their own requirements.
Who decides whether emergency lighting is required?
For workplaces, the employer on the basis of the risk assessment. For special buildings, the building authority sets requirements through the permit, usually based on the fire safety strategy. Both obligations can apply side by side.
Are exit signs enough without emergency lighting?
That depends on the building. Where safety lighting is not required, ISO 7010 exit signs, possibly photoluminescent, are often sufficient. Where it is required, exit signs must be illuminated during a power failure as well.
Does the requirement apply to existing buildings?
Existing buildings are generally assessed against the permit under which they were built. Workplace safety law, however, applies continuously: if a current risk assessment shows a need, emergency lighting must be retrofitted. Refurbishments or changes of use can also trigger new building law requirements.
Emergency lighting without worries.
Luminaires, installation and maintenance from a single source – every inspection documented digitally in our app. We start with a free on-site survey and standard-compliant design.