The paper develops a model of directed search on the job in which transitions of workers between unemployment and employment and across employers are driven by heterogeneity in the quality of firm-worker matches. The equilibrium is such that the agents’ value and policy functions are independent of the endogenous distribution of workers across employment states. Hence, the model can be solved outside of the steady state and used to measure the effect of cyclical productivity shocks on the labor market. Productivity shocks are found to generate large fluctuations in workers’ transitions, unemployment, and vacancies when matches are experience goods, but not when matches are inspection goods.
This article is a study of the shape and structure of the distribution of prices at which an identical good is sold in a given market and time period. We find that the typical price distribution is symmetric and leptokurtic, with a standard deviation between 19% and 36%. Only 10% of the variance of prices is due to variation in the expensiveness of the stores at which a good is sold, whereas the remaining 90% is due, in approximately equal parts, to differences in the average price of a good across equally expensive stores and to differences in the price of a good across transactions at the same store. We show that the distribution of prices that households pay for the same bundle of goods is approximately Normal, with a standard deviation between 9% and 14%. Half of this dispersion is due to differences in the expensiveness of the stores where households shop, whereas the other half is mostly due to differences in households' choices of which goods to purchase at which stores. We find that households with fewer employed members pay lower prices and do so by visiting a larger number of stores instead of by shopping more frequently. mor.phol.o.gy (noun)The branch of biology that deals with the form and structure of organisms without consideration of function. * Manuscript
and the Minneapolis FED. Discussions with Pete Klenow, Narayana Kocherlakota, Dale Mortensen, Giuseppe Moscarini, and Victor Rios-Rull led to significant improvements in the paper. Menzio gratefully acknowledges the financial support and the hospitality of the Hoover Institution. Shi gratefully acknowledges the financial support from the Bank of Canada Fellowship and from the Social Sciences and Humanities Research Council of Canada. The usual disclaimer applies. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research. NBER working papers are circulated for discussion and comment purposes. They have not been peerreviewed or been subject to the review by the NBER Board of Directors that accompanies official NBER publications.
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