This is basically it and how I see it working at places I've worked at. HR gathers information about you and then uses it to fire you when firing you is necessary....when you're no longer needed. So for example if you're an assembly worker and your product is end of production, you're done. Now engineering goes to work on a new trinket and you gotta wait until they are done. But when engineering is done, they're fucked. Now you're king because there's production to be done while engineering scrambles to figure out a new project that management wants to work on.