Isn't this another version of Chesterton's fence - lots of people may seem like they serve no apparent role, until they are gone. This is not to say there aren't some that in fact do serve no role, but careful consideration is required to determine who is who imho.
Sometimes those people change the work processes in a way to make their role important.. Need printer paper? You have to go through the old lady in the 3rd floor office, because noone else can order, store or give out office supplies, not even the office next door, where you can get ethernet cables and headsets.
