Window clerks usually work in the public portion of clean, well-ventilated, and well-lit buildings. They have a variety of duties and frequent contact with the public, but they rarely work at night. However, they may have to deal with upset customers, stand for long periods, and be held accountable for an assigned stock of stamps and funds. Depending on the size of the post office in which they work, they also may be required to sort mail.
Despite the use of automated equipment, the work of mail sorters, processors, and processing machine operators can be physically demanding. Workers may have to move heavy sacks of mail around a mail processing center. These workers usually are on their feet, reaching for sacks and trays of mail or placing packages and bundles into sacks and trays. Processing mail can be tiring and boring. Many sorters, processors, and machine operators work at night or on weekends, because most large post offices process mail around the clock, and the largest volume of mail is sorted during the evening and night shifts. Workers can experience stress as they process mail under tight production deadlines and quotas.
Most carriers begin work early in the morningthose with routes in a business district can start as early as 4 a.m. Overtime hours are frequently required for urban carriers. A carrier’s schedule has its advantages, however. Carriers who begin work early in the morning are through by early afternoon and spend most of the day on their own, relatively free from direct supervision. Carriers spend most of their time outdoors, delivering mail in all kinds of weather. Even those who drive often must walk periodically when making deliveries and must lift heavy sacks of parcel post items when loading their vehicles. In addition, carriers must be cautious of potential hazards on their routes. Wet and icy roads and sidewalks can be treacherous, and each year dogs attack numerous carriers.