Professionally, employers desire employees with good communication skills, and employees who have good listening skills are more likely to get promoted.
Communicating is part of life, if a customer comes up to an employee and asks where something is and the response is just a shrug of the shoulders or a quite whisper of a voice the customer is going to consider that rude and disrespectful. Along with the employer because they could be losing a customer. Showing effort and drive helps with promotions and also could lead to connections that could help you in the future.