I used to manage a 24-hour chain auto parts store. Yes, here in Chicago, one can buy auto parts at 3 a.m., if you really wanted to. One could do that every night of the month except one. We had to close the store for six hours (11 p.m.-5 a.m.) once per month to get the floor waxed.
The chain I worked for outsourced their overnight floor waxing to a third party. That third party had a four-man crew. They’d usually show up an hour early and start moving all of the floor displays to the back of the store and doing the other prep work they could do while the store was still open. Once they started with the floor-stripping chemicals, though, the doors were locked and the store was closed.
But two of our employees stayed in the back of the store. It was a huge store and there was plenty for them to do back there, like stocking the shelves, dusting, etc… Most of the parts we sold were stored in the back of the store. The “back of the store” was 4/5 of the entire building… the parts that are car-specific, and you have to ask someone who works there which part you need, and let them get it for you.
Among the tens of thousands of parts in the back of the store were carburetors. In the three years I worked there, I never once saw anyone buy one of those. They’re old technology that old timers like to work on as a hobby. The carburetors were in boxes and sold for about $500 each.
Every now and then, we’d discover that one of the boxes was empty. We, of course, assumed it was internal theft, because we’d notice a customer walking to the back of the store, unboxing a carburetor, putting the box back nicely, and walking out with the merchandise. We did have security cameras in the back, but there were many blind spots for them.
I didn’t know it at the time, but the head store manager began checking the carburetor boxes every day, and, when one was missing, he checked who was working that day. He did this for several months before he saw the pattern: they were always missing the day after the floors got waxed.
The floor waxing crew used a giant floor cleaning machine, like you might see at an airport:
When really, a machine this size, which is what similar companies used at similar-sized stores, would have been more reasonable:
One morning, as the floor guys were leaving, my boss met them at the door. He had two police officers with him. I believe he knew these cops as friends… I don’t think they would have been there otherwise. Anyway, my boss asked the head of the floor crew to open the hood of their giant cleaning machine. I don’t know if he did it willingly, or was compelled to do it by the cops. (I was there, but I was in the store, doing the opening paperwork.) But, when the hood was opened, there were four carburetors sitting in it where a water tank should have been.
The entire floor-cleaning machine had been modified for stealing items from the places whose floors they cleaned. It wasn’t just our store… they’d been doing this at several different stores.
Later, we heard through the grapevine that the head of the cleaning crew got a long prison sentence for stealing, because he had several prior convictions for other things.