Final answer:
The cornerstone of a positive employee relations strategy is mutual trust between employees and management.
Step-by-step explanation:
The cornerstone of a positive employee relations strategy is Mutual trust between employees and management. This means that there should be a level of trust and openness between employees and management, where both parties feel comfortable discussing concerns, sharing ideas, and working together to achieve common goals. This trust is essential for creating a positive work environment and fostering effective communication.