In most cases the top of the screen should be just below the eyes. If the screen is higher than these recommendations, it causes posture changes. Reference documents should be located close to the screen with adjustable copy holders. The brightness of reference documents should fairly match that of the VDT screen- auxiliary reference document lighting usually makes reference documents too bright. Shorter employees benefit from a foot rest.
Many employees find a wrist rest helpful.
The wrists should be straight while typing. The wrist rest is to rest upon- not to use while typing.