This paper argues that unemployment insurance increases labor productivity
by encouraging workers to seek higher productivity jobs, and by encouraging
firms to create those jobs. We use a quantitative model to investigate whe
ther this effect is comparable in magnitude to the standard moral hazard ef
fects of unemployment insurance. Our model economy captures the behavior of
the U.S. labor market for high school graduates quite well. With unemploym
ent insurance more generous than the current U.S. level, unemployment would
increase by a magnitude similar to the micro-estimates; but because the co
mposition of jobs also changes, total output and welfare would increase as
well. (C) 2000 Elsevier Science B.V. All rights reserved. JEL classificatio
n: D83; J64; J65.