Overqualified by Joey Comeau
It was recommended by a friend whose literary chops I trust; she made the suggestion via this comment on a previous MBR.
How it connects to the Public Sector
I'm not sure it does explicitly, but damn this book hit the spot.
What I got out of reading it
The book slowly reveals the history of its protagonist through a series of increasingly absurd cover letters. Having never read a work of fiction for a MBR I found reading Overqualified as part of the series a much needed reprieve from the world of business books.
I can't tell you much more about it other than I read it in a single day, spread over 3 separate sittings; and when I wasn't reading the book, I was looking forward to the next time I was going to.
Thanks for the recommendation Chelsea, I'm passing it along to everyone here.