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.
Rochelle Monte, a domiciliary care worker in Manchester who is on a zero hours contract, says her shifts "can change dramatically over the space of a week".
Speaking to BBC Radio 4's Today programme, she said "I give my employer my availability and hope for the best".
"You don't know how much you're going to be earning month on month and it can be really difficult to plan financially," she added.
Asked if she sees the added flexibility as an advantage, she said she could theoretically turn work down but that she never would for fear of losing out on future work.
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.