Postal clerks frequently:

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

It is important for postal clerks to be able to:

• See details of objects that are less than a few feet away.
• Understand the speech of another person.
• Speak clearly so listeners can understand.
• Use stomach and lower back muscles to support the body for long periods without getting tired.
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• Use one or two hands to grasp, move, or assemble objects.
• Use fingers to grasp, move, or assemble very small objects.
• 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 postal clerks to be able to:

• See details of objects that are more than a few feet away.
• Bend, stretch, twist, or reach out.
• Use muscles to lift, push, pull, or carry heavy objects.
• Move two or more limbs together (for example, two arms, two legs, or one leg and one arm) while remaining in place.
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• Be physically active for long periods without getting tired or out of breath.
• Focus on one source of sound and ignore others.
• Make quick, precise adjustments to machine controls.
• Use muscles for extended periods without getting tired.
• Coordinate movement of several parts of the body, such as arms and legs, while the body is moving.
• See differences between colors, shades, and brightness.
• Hear sounds and recognize the difference between them.
• Determine the distance between objects.