Perhaps the #1 "Oops" that should never be allowed to happen on the job, would be for an ATM re-stocker to leave a bag full of cash sitting outside their armored vehicle -- then driving off with it still sitting there. That's just what two in Mahwah, New Jersey did.

It was only a matter of time before the inevitable occurred: another guy showed up and took off with the bag, getting away with a hefty $150,000.

The shenanigans began when one of the workers set the bag on the lawn outside while rummaging around inside the heavily-secured (for good reason) vehicle at an Industrial Avenue stop on their route. To that, we can't help thinking, what was he doing setting 150 G's outside on the lawn in the first place?

Surveillance footage shows a man in a white van pilfering the cash sometime after 11:15 a.m. on Monday (Jul 27).  That same van can also be found in separate footage that shows a man stealing used tires from an auto repair shop.

The ATM workers are wisely cooperating with the authorities' efforts to recover the cash.