There is increasing recognition of the influence of workplace safety culture and safety climate in protecting the health of employees. With this recognition comes a heightened interest in effective approaches for strengthening workplace safety climate and safety culture. The 2007 Nachemson Memorial Lecture will explore the role of executive and front-line leadership in creating and maintaining workplace cultures that promote safety. Professor Stuewe will present case studies showing the importance of measuring workplace climate through the eyes of workers. He will describe the effectiveness of leadership training of both managers and supervisors as a key instrument in strengthening the safety culture of a workplace.