This paper provides a quantitative assessment of the relative importan
ce of different labour market adjustment mechanisms in Canada and the
United States. The effects of the unemployment insurance (UI) system o
n labour market adjustment are also examined. We find that, at the agg
regate level, employment growth shocks result in roughly similar unemp
loyment rate responses but smaller wage responses in Canada relative t
o the United States. Although the UI system has clearly contributed to
increased unemployment persistence in Canada, there is little evidenc
e that the endogenous component of the UI system has had a significant
effect on aggregate unemployment persistence. We also conclude that t
he lower degree of aggregate real wage flexibility in Canada has had o
nly a limited effect on unemployment persistence.