A quick glance back at Figure 11.4 will suggest some of the types of communication that the process manager has to master. The process manager needs to communicate with the managers of the upstream and downstream processes and with the managers and employees of key support processes. The process manager needs to communicate with his or her functional or unit manager and with any process manager with responsibilities for a value stream that includes process B. Finally, the process manager needs to communicate with the employees of process B. Employees function best if they know why they are doing what they are asked to do. The process manager needs to communicate reasons for the process work and, to the degree possible, communicate commitment to achieving the goals of the process. Once again, there is much literature on communication and managerial leadership. It is easy to be glib about it, but it is important and it is usually obvious if it is missing or defective when you do an analysis of a process and interview employees and upstream or downstream managers.