Looks nothing like Surepost. This is a same-day delivery service. You order something from Macys, Target, Kohls, local retailer, etc., and someone brings it to your house/business within a couple of hours.
Why would their employees be union?
From the Deliv website:
"
If you’ve got a vehicle, a smart phone, and a friendly, professional work ethic— we’ve got an opportunity for you. From day to day, you decide if and when you’ll be available for deliveries. When a call for delivery comes in, you pick up, you deliver, and you earn."
https://www.deliv.co/drivers/
Sounds like an opportunity for anyone with a flexible schedule that wants to earn some cash on an as-needed basis.