This is probably invisible to the general public.
Thankfully, my dealings with government has been minimal over the last 60 years, but in general I would describe the experiences as not "customer friendly" and I gained the distinct impression that they often hated their jobs but kept them anyway. That is understandable in that they do not have to be concerned with losing customers.
In the business world, we have to worry about customers. They pay the bills and we don't have police to send out to force them to do business with us. And people who so obviously hate their jobs typically don't last long unless they are member of some powerful union.
I know working in the post office is not a walk in the park. But I don't know of many jobs that are.