Y'know, I don't get the obsession with certain co-workers running to management every time they think someone wronged them.
This is especially true in the area where I work, as we need a strong, functioning group that knows what they're doing without being told or taught. That being the case, why in the world would you try and get your good, reliable workers in trouble? Is it for the few minutes of self-gratifying "I told you so"? We all know how management works there. They side with the first person to cry "wolf," deliver punishment to someone - ANYONE - and in just a few strikes, you're fired. Getting your longtime co-worker in trouble is the same as trying to get them fired. Get them fired and you've just shot yourself in the foot, because staffing is perpetually below required levels, and if they do hire in someone new, the veterans all have to babysit that person for weeks, if not months, until they catch on to things and can be trusted to be left alone.
Yeah, there have been dozens of times when my peer associates have screwed me over, but these annoyances are acceptable in the grand scheme of things. No group is perfect, and we're all operating on inconsistent and hypocritical parameters laid out by our managers in the first place, so there are bound to be conflicts of interest and orders.
Seriously, shit happens. Learn to handle your crap without sobbing to Big Brother every two seconds.