This report provides an in-depth analysis of organisational communication, including its principles, practices, and barriers. It explores various communication theories, such as the theory of fixed structures and organisation control theory. The report also evaluates communication practices, such as video conferencing and written communication, and discusses common barriers, such as language and cultural barriers. Additionally, it offers strategies for applying the principles of communication to improve effectiveness. Suitable for students studying organisational communication or professionals seeking to enhance their communication skills.