Abstract This chapter addresses the working conditions and well-being of young employees working in Luxembourg. Data from the “Quality of Work” project – a project that aims to assess the work quality and its relationship with well-being – was used to describe the working situation of young people in Luxembourg. Within the Quality of Work project employment quality (income satisfaction, training opportunities, career advancement, job security, difficulty of job change, and work-life-conflict), job design (participation, feedback, autonomy), work intensity (mental demands, time pressure, emotional demands), social conditions (social support, mobbing, competition) and physical conditions (physical burden, risk of accident) are seen as key factors that contribute to employee’s health, well-being and motivation (work satisfaction, vigor, burnout, general well-being, health problems). Findings show that younger employees (i.e., between 16 and 29 years) perceive more training opportunities and stronger career advancement compared to employees in the older age groups. They also report more participation, feedback and social support compared to the older age groups. On the other side, young employees report higher levels of physical burden and risk of accident. With regard to well-being, young employees report higher levels of work satisfaction and lower level of physical health problems. Regression analyses showed that the associations of certain working conditions with different well-being dimensions were not the same for the different age groups. Work satisfaction of young employees seems to be less affected by lower career advancement and lower job security compared to employees in older age groups. The present study is the first to elucidate the moderating effect of age on the association between working conditions and well-being/health in Luxembourg.