I agree with the message being conveyed but still contend that it shouldn't matter when you take your meal breaks as long as you take them.
Sometimes it does matter.
I cover a few routes that are straight business - there just isn't time to take lunch during the contractually agreed upon window. Doing so would lead to missed business savers, missed pickups, maybe even missed regular business deliveries.
It's clear that the route drivers take their lunch after everything's delivered and picked up, or there is no way these routes would have ended up the way they are.
By taking lunch outside the contract window, it's allowing UPS to max the route(s) out to the nth degree instead of adding in additional routes.
I suppose that on a straight residential route it wouldn't matter when you take your lunch, but for the most part it plays into UPS's favor when lunch is taken outside the contract window.
If every single driver on every single route nationwide pulled over from noon to 1:00 tomorrow for a full and uninterrupted lunch, as a company we would be looking at many tens of thousands of service failures as well as a bunch of management heads on plate in Scott Davis's office.
Bingo.