LIGHTING:
Good lighting is crucial for effective work, besides which, lighting accounts for a considerable part of the energy consumed in an office. Therefore, two basic elements which the designer must keep in mind are the cost and the efficiency of lighting. On the other hand, it is lighting which makes design come alive and it should be exploited accordingly. It can create a warm, inviting and dramatic interior, or result in a cold and monotonous office.

One effective use of the standard bulb is as a wall wash, which tends to imbue the whole space with incandescence and makes the room warm and friendly.
 
Incandescent down lights , halogens included , can complement fluorescents and can be used to highlight specific objects , such as desks , plants , paintings , objects , etc.

To reduce eye strain and fatigue , high contrasts should be avoided . Use of job oriented, task lights can be practical, if complemented by general lighting.
 
Suspended or pendant lights can serve a dual function in this regard, and while providing overall illumination, can be lowered to concentrate on a given space.

A system of selective switching and operational control area wise, or where possible even desk wise, can help restrict usage and operating costs of lighting to only as and when required.