Editorial Comment:

Abstract: This article examines how flexibility and rigidity equally pose a dilemma for management and trade unions. It explores the issue by examining a range of features within the employment relationship at the Royal Mail in the UK. It seeks to demonstrate how, in practice, both management and trade unions can require, pursue and argue for different and competing combinations of flexibility and rigidity. It concludes that it is analytically more useful to examine the content and form of the ‘flexible–rigid mix’ and explore how this is mediated by political, social and operational/technical processes