Effective communication can provide your restaurant with two things. First of all, it creates an atmosphere where both front of house and back of house employees are excited, motivated, and honest. Second of all, it helps you establish workplace expectations, which can lower staff turnover costs.
Proper communication starts from the top, and from the time someone is employed (or arguably during the interview stage). The key to setting expectations, communication, and a positive working environment starts with onboarding, operation manuals, and formal training.