The Dutch labour market is functioning well, with employment and labour participation rates above OECD averages. Nevertheless, there are sizable pockets of under-activity, including social benefit recipients representing 17% of the working-age population, which could be mobilised in order to address short-run labour shortages and the long-run ageing-related reductions in the labour supply. Reintegrating these benefit recipients would also help to reduce spending on labour market programmes, which is among the highest in the OECD. The paper argues that policies should continue to tackle the high inactivity of these groups. For people on social assistance and older workers, job search requirements should be strengthened and the authorities should continue making the tax-benefit system more work-friendly. For women with low-earning capacities, existing work disincentives should be eliminated. For (partially) disabled people, it is important to envisage labour market re-integration at an early stage. For the long-term unemployed, policies should be further strengthened by adjusting the unemployment benefit and the employment protection systems, as well as further improving current profiling and training measures. This Working Paper relates to the 2008 Economic Survey of the Netherlands (www.oecd.org/eco/surveys/netherlands)