The strange, wacky and weird world of being an Apple Store employee
As you might imagine, iPhone owners would have to try and con Apple Store employees about how their handset got damaged. This way, they could argue that the warranty was still valid. One customer tried to convince a Store employee that the liquid inside his iPhone "was some kind of E.T. fluid from when he was abducted (by aliens). It was hard to keep a straight face during that." Another customer came into the store with his iPhone in pieces, sitting inside a plastic bag. He had been so upset with the way that his iPhone was working, that he took it out back and shot it with a rifle. Needless to say, the damage was not covered by the warranty.
One of the former employees did mention the right way to get Apple to replace an iPhone with a cracked screen for free. This does require that you are aware of a known issue that is affecting your model. As an example, the Apple iPhone 6 had a problem with a film that was slowly sliding over the lens of the rear camera, leading to distorted photos. If you had dropped your iPhone 6 and gone into the store saying, "I dropped my iPhone 6 and I want the screen fixed," you'd end up paying for it. But if you went into the same store, saw the same guy, but focused on the issue with the film covering the camera lens, the phone would probably get replaced at no cost. It is all in the presentation.
Considering that the Apple Store would seem like an interesting place to work, why leave? Apparently, talking to people everyday about the same issues over and over became a chore for these three. But don't worry about Apple. They no doubt have a long list of people who would love to have the opportunity to put up with the strange, wacky and weird just to put on the Apple Store uniform.
source: Thrillist via CNET