Great question, Terry.
I think the author makes a great point re: folks not realizing the impact of their negativity on the overall work environment. I agree that managers at all levels can work to foster positive work environments (and thereby greater organizational performance) by getting to the root of the negativity. Depending on our individual default settings, the natural reaction to a negative or pesky teammate is often one of anger.
Having a private conversation (not “Can you see me please?,” but maybe casually over lunch or coffee) can go a long way in attitude readjustment. Obviously, it won’t work 100% of the time as some of us have deeper-rooted emotional issues than others. But recognizing human dignity as a key driver of employee satisfaction and morale is equal to, or sometimes more important then, giving someone a raise.