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• Back — While sitting at your work surface, make
sure your back is supported by the chair’s
backrest in an erect position or angled slightly
backwards.
• Arms — Your arms should be relaxed and loose,
elbows close to your sides, with forearms and
hands approximately parallel to the floor.
• Wrists — Your wrists should be as straight as
possible while using the keyboard, mouse, or
trackball. They should not be bent sideways, or
more than 10 degrees up or down.
• Legs — Your thighs should be horizontal or
angled slightly downward. Your lower legs
should be near a right angle to your thighs. Your
feet should rest flat on the floor. If necessary, use
a footrest, but double check that you have your
seat height adjusted correctly before getting a
footrest.
12
Getting Started
• Head — Your head should be upright or tilted
slightly forward. Avoid working with your head or
trunk twisted.
• Overall — Change your position frequently and
take regular breaks to avoid fatigue.
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