More than half of German companies report labour shortagesBERLIN, Jan 12 (Reuters) - More than half Germany's companies are struggling to fill vacancies due to a lack of skilled workers, the German Chambers of Commerce and Industry (DIHK) said on Thursday, in the latest sign of growth headwinds belabouring Europe's largest economy."We can assume that some 2 million vacancies will remain unfilled," Achim Dercks, DIHK's Deputy Chief Executive, said, with the result that companies were foregoing nearly 100 billion euros' worth of output.Staff shortages, high energy prices and the shift towards climate neutrality were a "dangerous mix" that could lead firms to move production abroad."The skilled worker shortage is not only a burden on businesses, but it also jeopardizes success in important tasks for the future like the energy transition, digitization and infrastructure build-out," he said.Workers with the relevant skills were growing ever scarcer, he said, including in the manufacturing sectors that are the engine room of the German exporting powerhouse."