The relation of the operator to the keyboard and the screen, the operator's posture, the lighting, and the background noise should be carefully examined to prevent discomfort. More serious are repetitive motion hand and wrist injuries. Risk of these injuries can be minimized with frequent rest breaks and appropriately designed keyboards. Work stations and lighting should be arranged to avoid reflections from the screen or surrounding surfaces. Light should be directed so that it does not shine into the operator's eyes when the operator is looking at the screen.
Task lighting enables operators to adjust lighting to their individual preferences.
Glare can result from light impairing on oval reflecting from a VDT screen or shiny keyboard. To avoid glare, display screens may be placed near a window so the line of sight between eye and screen is parallel to the window surface or the windows can be shielded to reduce excessive sunlight. An individual work station should provide the operator with maximum flexibility to adjust sitting position, arm and shoulder position and height of work surfaces. The work station should give the operator flexibility to reach, use and observe the screen, keyboard and the document. It's important for employees to receive guidance on making good adjustments to ensure a proper match of the employee, the equipment and work methods.