Is it legal for the company to reduce salary after returning to work without work injury?

It is illegal for the company to reduce salary after returning to work without work injury. Reducing workers' wages is an important change in the terms of the labor contract. Without the consent of the workers, it is illegal for the company to unilaterally reduce the wages of the workers, and it needs to bear legal responsibility. If the company reduces the salary of its employees at will, and the workers can propose to terminate the labor contract, then it is illegal for the company to reduce the salary after returning to work without work-related injuries.