The aim of WP4 is to describe the association between individual labour market disadvantages and youth well-being and health for different groups of young people (across EU-28 and Ukraine). The researchers will also try to explain these cross-country variances with country differences in the institutional setting and policies and describe causal mechanisms how youth experiences of labour market insecurity affect their trajectories of well-being and health in the short-run and long-run. Based on the interviews held in the frames of WP3 it will be investigated how youth in disadvantaged labour market positions rate and perceive their well-being and health status and how they cope with health problems and the problem of low level of subjective well-being.