A one-day nationwide railway strike could cost up to €100 million ($109 million) a day in economic output if production and business activities are disrupted across sectors, according to an estimate by the Institute of German Business (IW). “This also depends on the economic situation and the general functioning of supply chains,” said IW economic expert Michael Grömling. “However, the costs of a strike lasting several days may not increase linearly, but in some cases multiply. Experience with the coronavirus lockdowns has shown this to some extent.” The strike is affecting the economy in vari…