Nearly four decades ago, Participatory Design emerged as an area of research with a strong focus on the political dimension, emphasizing people's democratic rights to influence their own working conditions. During recent years the context of use for information technology has spreads from the workplace to our homes, urban settings, rural areas, art, culture and almost all aspect of everyday life. The goal of this workshop is to shed light on the basic concept of 'participation' in relation to other core concepts (such as democracy, emancipation and power) in order to address the challenges in the new domains. At a more general level, the goal of the workshop is to identify some of urgent research question the PD community is facing today and in the near future.