A professional who performs any combination of following tasks in post office. Respnsibilities include:

• Sells postage stamps, postal cards, and stamped envelopes.
• Issues money orders.
• Registers and insures mail and computes mailing costs of letters and parcels.
• Places mail into pigeonholes of mail rack, or into bags, according to state, address, name of person, organization, or other scheme.
• Examines mail for correct postage and cancels mail, using rubber stamp or canceling machine.
• Weighs parcels and letters on scale and computes mailing cost based on weight and destination.
• Records daily transactions.
• Receives complaints concerning mail delivery, mail theft, and lost mail, completes and routes appropriate forms for investigation.
• Answers questions pertaining to mail regulations or procedures.
• Posts circulars on bulletin board for public information; distributes public announcements; and assists public in complying with other federal agency requirements, such as registration of aliens.
• May drive motorcycle or light truck to deliver special delivery letters.
• May be employed in remote retail store contracted by post office to provide postal services and be designated Contract-Post-Office Clerk.