This report examines the critical role of organizational communication in business, highlighting its importance in creating a productive environment between a company and its workers. It covers key theories of organizational communication, including formal and informal communication, oral and written communication, directional communication (downward, upward, horizontal), and internal and external communication. The report also delves into the 7 C's of communication: completeness, conciseness, consideration, clarity, concreteness, courtesy, and correctness, emphasizing their role in ensuring clear, credible communication with customers. Furthermore, the report identifies and discusses various organizational communication barriers such as attitudinal, emotional, physical, informational, and cultural barriers, using the context of COVID-19 vaccination in the UK as a case study. Finally, it outlines government strategies to overcome these barriers, including addressing language differences, managing emotionality, overcoming physical barriers through technology, and mitigating psychological barriers through open-mindedness and empathy. The report concludes that effective communication is essential for organizational success and that overcoming barriers through strategic approaches can lead to better outcomes.