Ommunicating Effectively/ organization behavior

What different modes of communication are used in your workplace? What is your primary method of communicating at work? What evidence do you have as to the effectiveness of this communication method for your organization? How would you use other modes that you feel could be used more effectively?
Robbins, S.; Judge, T. (2013) Organization Theory & Behavior. Essentials of Organizational Behavior (12th Ed.). Upper Saddle River: Prentice Hall