It costs an awful lot to employ people, even young people, and there is plenty of red tape. During the late-90's and 00's it became more cost-effective to employ economic immigrants - who had experience and a greater work ethic - than it did to train up young people.
Reverse that effect and you'll see youth unemployment start to drop.
Either drop the minimum wage for the under 25's, or make it only effective after 100 weeks of employment. Cut employers NI for the under 25's. And make those applicable only to holders of a British passport, this would then give local youth a competitive edge over economic migrants.
During Labour's reign the overwhelming majority of jobs created went to economic migrants, perhaps Ed Balls should question why he and his party did nothing about that whilst in power? A little rich to tell the current shower about sitting on their hands doing nothing when he and his bunch did precisely that for an awful lot longer than 2 years, and during a decade long boom rather than a depression.
Ed Balls is a prime example of why people hate politicians in general.