This is a study of the specular reflection on a task placed between a viewer and an under-shelf light source in a constrained open-plan office cubicle workstation environment. Specular glare reduction and the optimi- zation of the location of the reflected image of a lamp may be measured and accurately predicted by the methods presented in this paper. These may be achieved by proper and optimal installation of light sources producing light of a high degree of polarization in open- plan office cubicles according to the height of the viewer to help in minimizing both direct glare and reflected specular glare. A diverse panel of human subjects using