This is actually very easy. Send a document in the name of the company, adjust the functions of an existing department of the company, increase the responsibilities of occupational health management, and designate several people in this department to share these functions. The leader of this department or company is the person in charge of occupational health management, and the safety officers in each workshop are part-time occupational health managers. Adding the content of occupational health management to these people's job responsibilities basically forms a top-down occupational health management network, which is basically enough.
Of course, if your company is strong, you can set up a special department with specialized personnel for occupational health management.