Over a third of workers are adversely affected by a lack of natural light in their office, others complain that the lighting is too bright and a significant proportion say the quality of light provided is so weak they struggle to read. This is according to a new poll which quizzed employees about the difficulties associated with workplace lighting and found that headaches and dizziness were a problem for one in seven. Other employees reported finding the lighting too bright and dazzling (12.4 percent), while one in 10 said they had to strain their eyes due to a general lack of light. A similar proportion said they were bothered by the position of the lights and by the ‘stressful environment’ created by their workplace lighting (9.3 percent each). The findings come as reports of ‘sick building syndrome’ — a condition associated with office work that causes symptoms including headaches and respiratory problems — continue to hit the headlines. Such symptoms are usually attributed to unhealthy or stressful elements of the working environment, such as poor ventilation and lighting.