The Workplace (Health, Safety and Welfare) Regulations 1992 oblige employers to provide workplace lighting that is "suitable and sufficient", which should be natural light, so far is "reasonably practicable".
No regulations exist that prescribe lighting levels in the workplace. The regulations do not define what is "suitable and sufficient" so to provide guidance the Chartered Institute of Building Services Engineers, CIBSE, provide a SLL LIGHTING GUIDE 7: Office Lighting which gives lighting requirements for office area. This is also replicated in BS EN 12464-1:2002 Light and lighting - Lighting of work places - Part 1: Indoor work places.
In section 5.3 of the british standard document, it provides a very thorough and detailed list of the recommended lighting levels in many different industries and locations. We have summarised a few of the more relevant suggestions
|Circulation areas and corridors||100|
|Circulation areas with stairs or similar||150|
|Canteens and other busy areas||200|
|General office space, rooms for medical attention||500|
|Detailed work such as the drawing offices||750|
|Very detailed work such as quality control||1000|
|Fine work or colour matching||1000 +|
Should you like the recommended values for a specific area then please feel free to contact us and we can provide those details or alternatively purchase the lighting guides above.