Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
The assumption of constant returns in the matching function, embodied in most bilateral search models, is crucial to ensure the uniqueness of the unemployment rate along a steady-state growth path. This article explores the empirical viability of this assumption by estimating individual reemployment probabilities on a sample of unemployment entrants. I apply hazard models to survey data on both completed and uncompleted unemployment durations. The hypothesis of constant returns to matching is not rejected, on the basis of the evidence that the job-finding hazard depends only on local labor market tightness and is independent of its size. Copyright 2001 by University of Chicago Press.