In this paper, we present a disequilibrium model of the labor market w
hich allows us to distinguish cyclical unemployment due to wage rigidi
ty from structural unemployment. This is done through the insertion, i
n the exchange condition of an aggregate disequilibrium model, of vari
ables measuring mismatch between disaggregated labor supplies and labo
r demands. Such a model also allows unemployment and job vacancies to
coexist. The model is estimated using Canadian quarterly data from 196
6 to 1983. Our results imply that structural unemployment due to inter
-industrial shocks while significant is fairly small.