The world's largest package delivery company estimates 28 million of those will be delivered on Thursday, Dec. 20 — projected to be the busiest day of the year. That's nearly double what the Atlanta company moves on an average day. UPS sees delivery of 527 million holiday packages
To handle the big jump, UPS plans to hire 55,000 seasonal workers to sort, load and deliver packages. That's the same number it hired last year.