1. Productivity and health Research has demonstrated that the quality of illumination in a work environment can have a direct impact on the health and productivity of employees. Discomfort, eye strain, migraines, and depression may result from inadequate illumination. Conversely, adequate illumination can improve task performance and job satisfaction by increasing alertness, improving concentration, and reducing fatigue.

2. Safety

3. Energy efficiency

4. Ambiance and aesthetics