Here's the downside. I was a security guard for a security company that contracted at a ceramics manufacturer. Normal quiet job just like OP's. One night I noticed a safe under one of the cubical desks. I noticed it because the door was open. I hadn't been told about a safe so I called my supervisor and asked him what to do. He told me to close it and log it while he called his contact with the company. The office manager calls me back and asks if I see a cash box in the safe, I said yes because there was a beige cash box in the safe. Turns out that's not the one she meant, the biede one is an empty one she forget was in there and she had meant a gray cash box. So she tells me to close the safe and log it. I do and go back to work. Office manager comes in about 6:30 am to check the safe and find the gray box missing. It had $11,000 in it. We found the cash box about an hour later in the board room trash can, obviously it was emptied out. Shit hits the fan because my supervisor didn't follow some written procedure, but the company wanted me gone, so I ended up moving to a new site. They tried to sue both the security company and me, but my boss had his lawyer act on both our behalves and got the lawsuit dismissed. But it was a hell of a month or so after that.