Umunna on zero hours contracts 'abuse'
20 August 2013 Last updated at 08:14 BST
Zero hours contracts give some employees flexibility and employers find them a good way to recruit in these difficult economic times. But they can also leave workers open to abuse, with no guaranteed work from week to week.
Labour are holding a summit on the issue with major employers and unions.
BBC Breakfast's Bill Turnbull spoke to the Shadow Business Secretary Chuka Umunna.