The purpose of this article is to discuss if Sweden is now on the verg
e of establishing permanent mass unemployment on a scale similar to mo
st other Western European countries. Mechanisms in the various welfare
systems which previously encouraged labour force participation have r
ecently weakened. Among low productivity people and people with little
human capital the risk for permanently lowered participation rates is
greatest. The reservation wage is to a large extent determined by the
level of income security offered by the welfare systems. The reservat
ion wage are in many cases above the lowest wages in the labour market
. The 1991 tax reform did not reduce the marginal effects for low-inco
me earners, and in some cases they were even increased, which restrain
s employment opportunities for this group even further. The comparativ
ely high unemployment rate in Sweden was a self reinforcing process, w
hich presupposed a low level of unemployment. This process may rapidly
be reversed in groups where the unemployment rate is high. In order t
o prevent mass unemployment the two most important measures are: (i) a
reduction of the reservation wage, and (ii) a lowering of the total m
arginal tax wedge on labour income.