I work in parts for a medium and heavy duty new truck dealership.  In any kind of dealership you see all kinds of crazy shit people do.

The parts manager at the time and his son, who was a mobile technician with the same dealer group but at a different location than our store, were conspiring with a customer and our shop foreman to falsify warranty claims in the name of parts and labor sales.  The parts manager was flipping the customer swag in return, coolers, bags, apparel, cash money, etc.

Here's how it worked - the son would go on site to the customer's shop, he and the customer, I think the guy was the shop foreman or something there, would pick out a handful of trucks to be "worked on."  The son would pass that info on to our foreman who would write the jobs up, he'd clock in on it and spend the day hanging out with their foreman, they'd go to lunch, go fishing, somedays he wouldn't even actually be at the customer's location, he'd stay home and do all of this over his phone and laptop.  He clocks out, service files everything to warranty, parts and labor are billed to the manufacturer, and off we go.

I forgot exactly how they got caught, but they did.  I think they raised some eyebrows about how the tech's warranty efficiency was supernatural.  Anyways, our foreman was able to hide/insulate enough to get most of the negative attention off him, he basically threw the tech under the bus to save his own skin.  They focused on the tech falsely billing hours and the parts manager bribing the customer to do this, and nailed both their asses to the wall.  Stood over them both as they cleaned out their service truck and office respectively, took all their company issued goods and walked them out the door.

That wasn't the last stupid thing our foreman did.  It didn't get him fired but it would have, more on that later.  He was one of them that was a crook with a heart of gold; he had no problem bending and breaking the rules to help someone in need.  Our office coordinator was going through it, she was in the middle of a nasty divorce with an abusive husband, she wasn't making much money doing what she did for us, and her health was failing her due to ALS.  Throughout all of this the transmission in her car blew up, leaving her with no steady transportation, she had to bum rides from her kids who really didn't want anything to do with her, or with her coworkers.

So the foreman issued a PO to a light duty transmission shop we use for our company vehicles and sent her car over to get the transmission rebuilt.  He made it as an internal PO, meaning the dealership was buying this transmission, and he would have gotten away with it too if he hadn't up and died on us.  

The problem was he never clued the service manager or general manager in on what he was doing, he figured he could hide the whole thing and make it go away.  A few weeks after his death and things kinda got back to normal, the service manager started going through POs and paying the bills and stumbled on this invoice for a transmission overhaul for a Buick or whatever it was, in any case it wasn't something we were working on or that belonged to us.  He really had no choice but to report it to the higher ups who sent a fucking auditor down to go through the previous six months or so of POs the foreman issued and determined it was a complete and total dumpster fire to sort through.  We wrote off like $60K worth of services and materials from his bogus POs, and our GM walked our office coordinator out as she had knowledge of what the foreman was doing with her car, and she should have told someone about it and not let him do what he did.  She lasted about another six months before ALS took her.  Sad story.

And this is at a truck dealership.  I spent most of my career before this in new car dealerships, and those dudes are buck-fucking-wild compared to the truck side.  Lots of drugs, alcohol, money and sex in those places.  I've seen some wild shit behind the curtain in new car dealers.

An openly gay former boss brought his company laptop in to IT to have it fixed. They found gay porn, he was walked straight out of an executive meeting to the door. HR cleaned his office into a box and sent it after him.

Technician napping in his cubicle, company president walks by, HR woke the tech up and walked him out.

We had a security officer who was worthless, never could get him to do anything. Turns out he had a second job at West Marine, someone saw him working there on a weekday when he was on the clock collecting pay from the state.

His replacement got fired for harassing the receptionist, and got our entire lab's security clearance yanked.