"This paper empirically examines the effects of market size on producers' sizes in retail trade industries with many producers. A robust prediction of oligopoly theory is that larger markets are more competitive and have lower price-cost markups. Because producers in more competitive markets...

"We calibrate a model of labor demand to infer the employment responseto a change in the minimum wage in the food away from home industry. Assuming a perfectly competi- tive labor market, the model predicts a 2.5 to 3.5 percent fall in employment in response to a 10 percent minimum wage change....

"This paper proposes a methodology for estimating job search models that does not require either functional form assumptions or ruling out the presence of unobserved variation in worker ability. In particular, building on existing results from record- value theory, a branch of statistics that...

"This paper estimates the returns to retraining for older displaced workers--those 35 or older--by estimating the impact that community college schooling has on their subsequent earnings. Our analysis relies on longitudinal administrative data covering workers who were displaced from jobs in...