The U.S. Postal Service, like many other companies, has a seasonal uptick in business. During peak season, which runs from the beginning of November to the beginning of January, the Postal Service handles increased volumes across different categories and requires hiring of non-career employees to help. The seasonal hires assist in every part of USPS, from processing to transportation to delivery. Over the past three peak seasons, the Postal Service hired anywhere between 26,000 and 49,000 emplo