US earnings inequality has increased dramatically since the 1970s, and the prospect of a reversal depends on what caused the trend. The standard explanation emphasizes skill-biased technical change. This paper briefly considers some aggregation issues and then proceeds to outline two alternative...

To explain the rise in the college wage premium in developed economies in the past decades, the present paper examines the effects of technological progress on workers effort incentives, which determine the effective labor supply. Five effort incentive effects of technological progress are...

To explain the rise in the college wage premium in developed economies in the past decades, the present paper examines the effects of technological progress on workers' effort incentives, which determine the effective labor supply. Five effort incentive effects of technological progress are...

New information and communication technologies, we argue, have been 'power-biased': they have allowed firms to monitor low-skill workers more closely, thus reducing the power of these workers. An efficiency wage model shows that 'power-biased technical change' in this sense may generate rising...