A high school diploma or equivalent is required to become a postal service worker. All applicants for these jobs must take a written exam. 

Education

Although there is no specific postsecondary education requirement to become a postal service worker, all applicants must have a good command of English.

Postal service mail carriers must be at least 18 years old. They must be U.S. citizens or have permanent resident-alien status. Males must have registered with the Selective Service when they reached age 18.

All applicants must pass a written exam that measures speed and accuracy at checking names and numbers and the ability to memorize mail distribution procedures. Jobseekers should contact the post office or mail processing center where they want to work to find out when exams are given.

When accepted, applicants must undergo a criminal background check and pass a physical exam and a drug test. Applicants also may be asked to show that they can lift and handle heavy mail sacks. Mail carriers who drive at work must have a safe driving record, and applicants must receive a passing grade on a road test.

Training

Newly hired postal service workers receive short-term on-the-job training, usually lasting less than 1 month. Those who have a mail route may initially work alongside an experienced carrier.

Important Qualities

Customer-service skills. Postal service workers, particularly clerks, regularly interact with customers. As a result, they must be courteous and tactful and provide good client service. 

Physical stamina. Postal service workers, particularly carriers, must be able to stand or walk for long periods.

Physical strength. Postal service workers must be able to lift heavy mail bags and parcels without injuring themselves.