Using individual data from the European Survey on Working Conditions (ESWC) covering all EU member states, this study aimed at contributing to our understanding of the effects of High Performance Workplace Organizations (HPWOs) on worker's job satisfaction. The estimation results show that a higher involvement of workers in HPWOs is associated with higher job satisfaction. This positive effect is dominated by the involvement of workers in flexible work systems, indicating that workers particularly value the opportunities associated with these systems, such as an increased autonomy over how to perform their tasks, and increased communication with co-workers. Being involved in team work and job rotations as well as supporting human resource practices appear to contribute relatively little to the increased job satisfaction from being involved in HPWOs.