Comparable worth, or pay equity, is now an established policy in some US states, such as Minnesota, and the UK and Australia. Yet Steven Rhoads’s research on those jurisdictions indicates there is no consensus on how to compare the value of dissimilar jobs involving ‘comparable’ amounts of effort, skill and responsibility. Consultants whose job evaluation systems are used in states adopting comparable worth policies do not agree on the factors to be included or how they should be weighed and arbitrary results produced by comparable worth policies have led to inefficient functioning of the labour markets. These policies have generated ill will among the workers who lose pay-equity cases, with political as well as economic consequences. The book argues that jobs are truly incomparable using the methods comparable worth relies on, and that the principles of comparable worth are not reconcilable with those of a market economy.