Don’t all these delivery businesses operate an “owner-driver” model, where the drivers are effectively self employed?
My father did this work for Lynx for a while when he was out of IT work. He was paid according to what he delivered – so anything not delivered (or any time slots – e.g. before 1pm – missed) causes the driver a penalty. They always have much more to do than there is reasonable time in the day.
Some drivers care more about this than others, hence the discrepancy in treatment of the recipient (remembering that the recipients aren’t their customers).
Not a job I’d like to do, though the old man told me he was as fit and tin in his mid 50s as he was in his late 20s.