'Monopsony in Labor Markets is an excellent, empirically rich, and modestly technical treatment of a subject that will be especially helpful to antitrust lawyers and economists trying to sort out the effects of monopsony power on labor. The authors include full chapters on wage collusion and no poach agreements, noncompete agreements, and mergers. This book is particularly useful on questions like the extent and measurement of labor market concentration and power, tradeoffs between output and input effects, and the role of efficiencies. A must-read for an antitrust era in which harm to workers has suddenly become important.' Herbert Hovenkamp, Dinan University Professor, Univ. of Pennsylvania Law School and the Wharton School