Effective Human Resource departments are not necessarily noticed when operations go well. Some of the best HR managers can influence corporate culture without having a direct hand in the daily goings-on.
That doesn’t mean that HR managers and personnel aren’t involved; it simply means their positive influence can be hard to observe. They have a lot to do with a company culture that develops within an organization. Certainly, when things go wrong, and HR teams need to stand up and take charge, you see and hear from them constantly.