“Sure he’s a jerk who doesn’t like anyone and no one else likes,” people might say, “But he’s got sound technical skills, a flair for organization, and knows how to get stuff done. We can’t just fire him. He’s good for business.” New research, however, suggests this attitude may not be entirely accurate, according to Bloomberg. Talent management firm Cornerstone OnDemand looked at 63,000 employees and found the ones who had been fired because of things like harassing co-workers, falsifying documents, engaging in fraud, or being violent. What they found was that once these types make up about 5 percent or more of the total staff, co-workers became 54 percent more likely to quit, said Bloomberg. Anyone who has had to train a new hire and watch as they take some time to get the hang of the job knows that too many people quitting can get really expensive. The study estimates that each one of these “toxic employees” costs the workplace $12,800 due to these tendencies, versus $4,000 to hire someone not quite as disruptive.