After a marathon round of negotiations between union and business leaders, 3.9 million employees in Germany’s metal and electrical industries are to receive a significant pay rise. The IG Metall union and employers’ associations said in Hamburg on Tuesday that an agreement has been reached following 18 hours of negotiations to raise wages by 5.1% in two stages. “This is not a deal for which we will be celebrated,” said union negotiator Daniel Friedrich. However, he emphasized that the deal brings stability for workers in difficult times after a number of strikes. Stefan Wolf, president of the …