The number of workers on zero-hours contracts could be one million - four times as high as official estimates, according to new research. Such workers are on call to work when needed by bosses but employers do not have guarantee any hours.
Zero hours contracts should be the "exception to the rule," according to Shadow Business Secretary Chuka Umunna.
"Whilst some employees welcome the flexibility of such contracts, for many zero hours contracts leave them insecure, unsure of when work will come, and undermining family life,"he said.
"The 'review' the Business Secretary has established into zero hours contracts is clearly inadequate given the seriousness of this issue and the mounting evidence of the abuse of zero hours contracts. Nothing less than a proper consultation with a formal call for evidence will do.
The government is looking into zero hours contracts as new research says the number of people working such contracts could be one million.
Opinion varies dramatically among both workers and employees when it comes to zero hours contracts, as ITV News viewers demonstrate.