The current special issue examines the range and strength of analysing contemporary transformations and struggles through the lens of ‘precarity’. Rather than defining a single precariat, the interest is in exploring ‘varieties of precarity’. These take different forms in different parts of the world, on different scales and in different socio-economic contexts, and yet they share certain characteristics in terms of conditions and capacity for agency. Contributions to this volume testify that precarity may be a political proposition as much as a sociological category that offers an analytical description of current transformations. The selection of articles has the ‘politics of precarity’ as a frame of reference. It describes the political economy of neoliberal globalization producing institutionally embedded precarization of labour, livelihoods and citizenship, but also resistance against the systemic structuration within which it is embedded.