Poisonous leaders are leaders who take a toll on the workforce, and therefore the bottom line. A company needs to know how to protect itself from this hidden cost, including the right metrics, the right coaching, and a careful look at how incentives may drive their bad behavior. In this week’s HR Power Hour segment, host David Ciullo discusses with author, leadership, and team performance expert Sean Lemson his new book, One Drop of Poison: How One Bad Leader Can Slowly Ki...