Your top workers can almost always get another job, even in a shaky economy. "The best employees are being recruited at any given time. Managers need to make that assumption and create an environment that's going to make them want to stay," says Paul De Young, a talent management practice leader at Watson Wyatt Worldwide Inc., a global consulting firm. Are you really doing that? Or do your management tactics have people running for the door? Before you answer, consider these cautionary tales that can help you avoid pushing your own top talent out the door.