In some sectors, relatively few employees can paralyze a large machine – this is also the case in the ports, hubs for import and export. The consequences of the latest warning strike are now becoming apparent.

Last week’s 48-hour dockworkers’ strike caused container ship traffic jams on the North Sea to increase again. The economist Vincent Stamer from the Kiel Institute for Economic Research (IfW) told the dpa that for the first time since the IfW began collecting data in 2016, more than 20 container ships were waiting to enter a German port.