Non-fiction book about the working poor and what it is like to live on minimum wage. An investigative reporter works as a waitress, maid, and at Wal-Mart and writes about her experience trying to live on the minimum wage. Also writes about society's perceptions of the working poor and feeling invisible. But a real focus and problem was housing and how the high cost of housing means so many working poor are living in hotels by the week in horrible conditions and working multiple minimum wage jobs. Written in a story type fashion with most of her research in footnotes.