Honestly, what are you trying to get out of this? UPS has a right to request that you take a lunch and does so for its own benefit - not yours. If you choose not to take a lunch but instead work a half-hour unpaid, that's your choice. If another driver complains about it, that's his choice too since your actions directly impact time studies. And if the company decides to fire your for being dishonest & exposing it to liability when you were working unpaid... that's it's choice too.
The company has the right to mandate employees take a lunch.
But in this case, UPS seems to allow him to not take his lunch and they do not deduct the half hour.
So he is NOT working a half hour unpaid.
He is getting in sooner and making the same money.
And this does not affect the time study. The time study does not study the driver. It does not matter how fast or slow he is, or whether he takes his meal, or whether he works through breaks.
The time study is irrelevant of which driver is doing the route. They study the route, distance from street, steps walked, business, residential, not the driver.