This paper examines compulsion in active labour market programmes (ALMP). When an unemployed worker has to participate in a programme in order to remain eligible for benefits there are two seperate effects. First, there is the treatment effect, i.e. the programme makes the worker more attractive for a potential employer or makes search more efficient, thus helping the unemployed worker to find a job more quickly. Second, there is the compulsion effect, i.e. because the worker has to attend the programme his value of being unemployed drops and he is stimulated to find a job more quickly. So, both effects induce the worker to find a job more quickly. The difference between the treatment effect and the compulsion effect concerns the quality of the post-unemployment job. The treatment effect improves the quality; the compulsion effect lowers the quality of post-unemployment jobs.