Mail clerks frequently:

• Use their hands to handle, control, or feel objects, tools, or controls.
• Repeat the same movements.
• Stand for long periods of time.
• Sit for long periods of time.
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• Walk or run for long periods of time.
• Bend or twist their body.

It is important for mail clerks to be able to:

• See details of objects that are less than a few feet away.
• Understand the speech of another person.
• Use one or two hands to grasp, move, or assemble objects.
• Use fingers to grasp, move, or assemble very small objects.
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• Hold the arm and hand in one position or hold the hand steady while moving the arm.

It is not as important, but still necessary, for mail clerks to be able to:

• Speak clearly so listeners can understand.
• See details of objects that are more than a few feet away.
• Use muscles to lift, push, pull, or carry heavy objects.
• Use stomach and lower back muscles to support the body for long periods without getting tired.
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• Make quick, precise adjustments to machine controls.
• Move two or more limbs together (for example, two arms, two legs, or one leg and one arm) while remaining in place.
• Adjust body movements or equipment controls to keep pace with speed changes of moving objects.
• Bend, stretch, twist, or reach out.
• React quickly using hands, fingers, or feet.
• See differences between colors, shades, and brightness.
• Determine the distance between objects.
• Hear sounds and recognize the difference between them.
• Make fast, repeated movements of fingers, hands, and wrists.
• Use muscles for extended periods without getting tired.
• Be physically active for long periods without getting tired or out of breath.
• Choose quickly and correctly among various movements when responding to different signals.
• Coordinate movement of several parts of the body, such as arms and legs, while the body is moving.
• Keep or regain the body's balance or stay upright when in an unstable position.
• Focus on one source of sound and ignore others.