This essay tests key components of the mismatch hypothesis with a samp
le of inner-city men that includes four ethnic or racial groupings - w
hites, Blacks, Puerto Ricans, and Mexican immigrants, The findings pro
vide limited support to mismatch. Key components of mismatch. such as
human capital attributes and access to automobile commuting, do appear
to influence employment likelihoods among native disadvantaged minori
ties, but have little effect on immigrants, The latter consistently ex
hibit high employment rates. The interpretation offered rests on two f
actors. First the data support the idea that immigrants' social networ
ks largely underlie their impressive work records. In addition, the da
ta provide limited support to the explanation, strongly indicated in t
he literature, that immigrants are favored by employers for their expl
oitability and that such preferences are expressed via hiring techniqu
es that utilize the immigrants' social networks.