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Arm Support Adjustment

1. Arm Supports

Arms should be adjusted laterally to a point where support is provided evenly with the arms comfortably positioned close to the torso. Once the lateral adjustment is complete move the height of the support to a position where the shoulder is supported comfortably. The height of the arm support should not interfere with the workers ability to move their hands about the work surface. Proper arm support height allows the workers arms to float just above the arm support while tasking with minimal contact with the arm supports.

2. Workstation

Once the chair adjustment is complete it is time to move onto the rest of the workstation. If possible set the work surface at ¼" above the height of the arm supports on the chair. Remember to make your measurement while the worker is seated in the chair. Sometimes the work surface height can not be effected. In those cases it may be necessary to now change the height of the chair. Most of the time in these situations the chair will need to be raised. You will then need to raise the floor. We should say raise the basis of your adjustments. You can do this with a foot support of some kind. Anything that will support the workers feet at an equal distance from the floor to that of the height change to the chair. When adjusting the chair upward to meet the work surface height measure the amount of change then add a foot support with elevation equal to that measurement. Keep everything in as close as to the worker as possible. Next set the height of the monitor. There are a couple of theories regarding proper monitor height. At ERGOdynamics we believe the monitor should be set at an elevation where the top of the monitor is on a level plane with the workers eyebrows. This puts the primary viewing and working area within a 10-15 degree angle from the visual horizon when the head is held in a neutral posture.