Open-plan office: how to improve your teams’ well-being with lighting
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The open-plan office is the most common and least well-lit workplace. Between aging fluorescent panels, a lack of natural light, and the oppressive feeling of a uniform ceiling, lighting is often the first factor employees cite when discussing discomfort at work. And it is one of the easiest to fix.
Assessing lighting in an open-plan office
Common problems
- Insufficient light output: aging panels that have lost 30 to 40% of their initial output
- Unsuitable color temperature: 3,000 K (warm) or 6,500 K (cool) instead of 4,000 K
- Low CRI: CRI 70 panels that distort the perception of colors on screens
- Lack of differentiation: the same uniform lighting across the entire surface, with no distinct areas
The simple assessment
Measure the luminous flux with a smartphone light-meter app (approximate) or a €25 lux meter. Result below 400 lux at the work surface: your panels need replacing. Yellowish color: color temperature too low. Aggressively bluish color: too high.
The step-by-step solution
Step 1: replace the fluorescent lighting system
Systematic replacement with 40W, 4,000 K, CRI 90 LED panels. Budget: €89/panel (standard panel), deliverable within 3–5 days. ROI on the electricity bill: 4 to 5 years.
Step 2: add decorative panels
In areas without windows or at workstations furthest from natural light sources, replace 1 in 4 panels with a decorative sky panel. Immediate effect on the perception of space.
Step 3: differentiate the areas
- Active work area (workstations): 500 lux, 4,000 K, dimmable
- Break area: 200–300 lux, 3,000 K if possible (visual separation)
- Collaboration area (standing): 500 lux, not dimmable
FAQ
How can you improve lighting in an open-plan office?
To improve lighting in an open-plan office: (1) replace fluorescent panels with 4,000 K LEDs, CRI 90; (2) add decorative panels (sky, nature) above work areas without windows; (3) differentiate lighting by zone (workstation, break area, collaboration area); (4) make the lighting adjustable (DALI dimmer) to adapt the intensity to different tasks. A budget of €1,500 to €3,000 can transform a 100 m² open-plan office.
Does open-plan office lighting really affect well-being?
Yes. Studies conducted in windowless open-plan offices show that replacing fluorescent lighting with 4,000 K LED lighting plus biophilic decorative lighting reduces reported fatigue by 20 to 35% and improves workplace satisfaction. The impact is more pronounced in spaces without natural light (basements, the core of a building).
Can LED panels be installed in an open-plan office without closing the building?
Yes. Replacing panels in a T-bar suspended ceiling is done one panel at a time, without closing off the area. In practice, one person can replace 10 panels in 2 hours. The work can be carried out during off-peak hours (evenings, weekends) without affecting operations. No scaffolding, no dust: it is a clean and quiet operation.
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Collection: LED panels for offices
To equip your offices and professional spaces:
Discover our selection of 60x60 LED panels for office suspended ceilings (UGR < 19 visual comfort and flicker-free) or explore the 6-Panel Bright Sky Pack to transform your open-plan office.
Need help with installation? Consult our complete guide to installing in a suspended ceiling.
