A good company should have processes in place to minimize the chances that people make mistakes. When mistakes inevitably happen, all the company made the mistake as a whole, not the single person. What happens next should be: what happened? Why did it happen? How are we fixing it? What are we doing not the make it happen again? plus possibly other mistake minimization processes.

If your company is not firing people for making too many mistakes it seems that it's structured in that way or a similar one.