Adjust the work surface height based on the task
being performed
• For rough assembly involving the lifting of heavy parts, it is more
advantageous to lower the work surface by as much as 8 in (20 cm)
to take advantage of the stronger trunk muscles.
• For fine assembly involving minute visual details, it is more
advantageous to raise the work surface by up to 8 in (20 cm) to bring
the details closer to the optimum line of sight of 15°.
• These principles also apply to a seated workstation, are best
performed at the resting-elbow height.
• If the job requires the perception of fine detail, it may be necessary to
raise the work to bring it closer to the eyes.
• Seated workstations should be provided with adjustable chairs and
adjustable footrests.
• The workstation also needs to be adjustable.