Overtime, by Charles Stross

Charles Stross has a Hugo-award novelette nominee to accompany his novella nominated Palimpsest. This one is called Overtime, one of a series of stories about the Library. The Library appears to be an ordinary sort of run-down British government bureaucracy, except that it deals with the supernatural. And it is dealing with the first of an expected onslaught of Things That Go Bump In the Night brought about by belief. The story is quite funny, a good read. If you like this you'll probably like Jasper Fforde's work.