This document discusses communication in organizations. It outlines the importance of communication for getting work done through people, maintaining a cordial environment, and enhancing efficiency. It describes different types of communication like internal and external, as well as formal and informal channels like vertical, horizontal, lateral, and grapevine communication. The modes of communication discussed include oral methods like face-to-face interactions, telephone calls, and meetings, as well as written methods like emails, memos, letters, and reports. Effective communication in organizations requires utilizing multiple channels, choosing the appropriate channel and mode, adopting a flexible approach, and keeping an open mind.