The national minimum wage for adult workers in the UK is £6.31.
Wage campaigners argue that this does not equate to a "living wage" and have called for an increase to reflect the cost of living.
Some politicians have been calling for a revision as well, with some cabinet ministers suggesting a 50p increase is needed.
There are also suggestions that a minimum wage "top-up" in areas of high costs and higher average earnings could be introduced - paid for by employers.
Labour politicians have also talked of backing a significant rise in the minimum wage, but without specific figures- and of having a higher "minimum" in some sectors of the economy.