Communication occurs with the appearance of man, it develops, changes and improves, and its change and development is accompanied by communication channels. Today, there are a large number of channels for transmitting messages, and each of them has its advantages and disadvantages. Depending on the message we want to transmit, we choose the most suitable transmission channel. The message is transmitted from the sender to the recipient, and the communication model consists of the sender encoding his thought, the channel through which the message is transmitted, the recipient decoding the thought, feedback and noise. Purpose of communication is not only to convey the message but also to get the message understood correctly. One form of communication is nonverbal communication with a great impact on the recipient and his understanding of the message. Nonverbal communication should always be consistent with verbal communication. Communication is important in the business world, because it represents ourselves and our organization and we communicate within the organization. Organization is an ambiguous term that implies the process of organizing and organization as an institution with its formal and informal structure. Formal communication follows the formal structure of the organization in three directions: vertical from top to bottom, vertical from bottom to top and horizontal, and informal communication that does not follow any predetermined structures or rules. Erste Bank has developed formal communication with respect to the basic formal organizational structure, but it is not strictly official, and also developed informal communication.