Postal service workers held about 484,600 jobs in 2014. They all worked in the federal government.
Employment in the detailed occupations that make up postal service workers was distributed as follows:
Postal service mail carriers
Postal service mail sorters, processors, and processing machine operators
Postal service clerks
Postal service clerks and mail sorters, processors, and processing machine operators work indoors, typically in a post office. Mail carriers mostly work outdoors, delivering mail in all kinds of weather. Although carriers face many natural hazards, such as extreme temperatures and wet and icy roads and sidewalks, the work is not especially dangerous. However, repetitive stress injuries from lifting and bending may occur.
Most postal service workers are employed full time. However, overtime is sometimes required, particularly during the holiday season. Because mail is delivered 6 days a week, many postal service workers must work on Saturdays.