We propose that the natural rate of unemployment has an active role in the business cycle, in contrast to the prevailing view that the rate is essentially constant. We demonstrate that this tendency to treat the natural rate as near-constant would explain the surprisingly low slope of the...

We explore the response of employment (unemployment) skill differentials to skill-biased shifts in demand touched off by the new and spreading technologies. We find that skill differentials in unemployment follow at least in part the same pattern as skill differentials in wages: They widen...

This paper uses a disaggregated approach to study the volatility of common stocks at the market, industry, and firm levels. Over the period 1962-97 there has been a noticeable increase in firm-level volatility relative to market volatility. Accordingly correlations among individual stocks and...

A common feature of federal systems is that tax bases are joint property. Consequently, state and federal tax setting decisions are interdependent. Our aim here is to put forward a rudimentary theoretical analysis of this phenomenon, and to use the theory as a framework for econometrically...

In the last two decades, U.S. policies have moved from the use of incentives to the use of sanctions to promote work effort in social programs. Surprisingly, except for anecdotes, there is very little systematic evidence of the extent to which sanctions applied to the abusive use of social...

The recent European experience of high persistent unemployment has led to the development of theories of unemployment hysteresis embodying the idea that the equilibrium unemployment rate depends on the history of the actual unemployment rate. This paper summarizes two directions of research on...

In the most widely analyzed type of efficiency wage model of involuntary unemployment, firms pay wages in excess of market clearing to give workers an incentive not to shirk. Such payments in excess of market clearing and the resultant equilibrium unemployment act as a worker discipline device....

This paper surveys recent developments in the literature on efficiency wage theories of unemployment. Efficiency wage models have in common the property that in equilibrium firms may find it profitable to pay wages in excess of market clearing. High wages can help reduce turnover, elicit worker...

This paper develops a model of dual labor markets based on employers' need to motivate workers. In order to elicit effort from their workers, employers may find it optimal to pay more than the going wage. This changes fundamentally the character of labor markets. The modelis applied to a wide...