Although the relationship between unemployment and poor mental wellbeing ha
s long been an area of interest within behavioural science, the role of sta
te intervention in the unemployment situation has not been thoroughly inves
tigated. This article investigates how unemployment benefit systems and act
ive labour market policy measures affect mental well-being among the unempl
oyed in Sweden. The study uses a longitudinal and nationally representative
survey of 3,500 unemployed Swedes. Three different types of active labour
market policy measures involving the unemployed were studied, 'activation',
'vocational training' and 'work-place participation' measures. Of these on
ly involvement in 'workplace participation' was found to have a clearly pos
itive effect on mental wellbeing among those participating. Of the two Swed
ish unemployment benefit systems, the more generous income. replacement Une
mployment Benefits and the less generous nat rate Cash Unemployment Benefit
s, only access to income replacement Unemployment Benefits was found to med
iate the mental well-being impact of unemployment. The positive effect of a
ccess to income replacement Unemployment Benefits was further accentuated w
hen unemployment was prolonged. Those with access to this benefit system se
emed to suffer no further deterioration of mental wellbeing, while the ment
al well-being of the rest of the unemployed further deteriorated.