[T]he book is an interesting example of how a few cases from the ECJ can have an impact on EU law as well as on national law in so many aspects. Generally, the book is a good contribution to the discussion on the incorporation of labour standards, but it is an even better contribution to understanding the reasoning of the ECJ and can hence be read by anyone with an interest in EU law... the book is a significant input to the ongoing debate on the topic of the enforcement of labour standards in public procurement as well as from a general EU law perspective.