This book is the only comprehensive analysis of contemporary prison labor in the United States. In it, the author makes the provocative claim that prison labor is best understood as a form of slavery, in which the labor-power of each inmate (though not their person) is owned by the Department of Corrections, and this enslavement is used to extract surplus labor from the inmates, for which no compensation is provided. Other authors have claimed that prison labor is slavery, but no previous study has made a rigorous argument based on a systematic analysis of the flows of surplus labor which...