"The collapse of inflation-adjusted wages in Spain is so massive that it is hard to grasp. But ok, labour power has also been severely weakened over the course of the Euro Crisis with the decentralisation of wage bargaining etc.", showing a graph of real wage growth under collective bargaining
https://fedi.xerz.one/media/74bd6a9b9967617f25369de8429cbad19372713acb892b9519f63e846e858cdb.png