Why interpersonal abilities skill is important for an employee to possess in an organization?

Interpersonal skills are the tools people use to interact and communicate with individuals in an organizational environment. There are seven main areas of interpersonal communication. 1-Verbal communication, 2-Non-verbal communication, 3-Listening skills, 4-Negotiation, 5-Problem-solving, 6-Decision-making, 7-Assertiveness. if you failed in any of one area you will lose job, that's why interpersonal skill are very important for successful career life.