Explanation:

Upward Communication is the process of information flowing from the lower levels of a hierarchy to the upper levels. This type of communication is becoming more popular in organizations as traditional forms of communication are becoming less popular. The more traditional organization types such as a hierarchy, places people into separate ranks.

Upward communication helps employees to express their requirements, ideas, and feelings. For the top management, upward communication is an important source of informations for business decisions. It helps in alerting top management about the requirement of changes in an organisations. Upward contribution is the core contributor of business process reengineering in many organisations.