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During this year's holiday rush (November 29-December 30), UPS expects to handle an average of 32 million packages per day — a 5% increase compared with last year's holiday season, and a 60% increase compared with the rest of 2019. UPS delivery man Vinny Ambrosino prepares to deliver packages on Christmas Eve while wearing a Rudolf nose and antlers in New York, December 24, 2013. Carlo Allegri/Reuters

In order to handle higher package volumes without significantly expanding its in-house fleet of trucks, which would then go unutilized for the remainder of the year, UPS is expanding the hiring of seasonal drivers who can provide their own vehicles for deliveries.

The company is also capitalizing on its years of investments in automating warehouse operations. In 2018, UPS committed to investing $20 billion in automation technology. The company transitioned from putting 50% of packages through automated facilities in 2017, to 70% in 2018, and an expected 80% in 2019, according to Business Insider.

This has also enabled the company to keep seasonal hiring flat, despite the increase in package volume — UPS's total seasonal hires for 2019 should hover around 100,000, about the same as last year.

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