The challenges that today's human resources departments must keep up with are complex to say the least. Tons of regulations and compliance issues and policies. A complicated tower of state and federal agencies, blocked up against internal corporate demands and external suppliers and providers to manage this or that.
It all kind of makes you wonder what an HR administrator does after working hours. I bet they'd be excellent at an intricate game like Jenga. I also bet they don't play it much...
That would be too much like their day job.