I am no expert on either economics or politics, but it seems to me that these arguments about the possible impact of the Living Wage on small (and not-so-small) businesses are exactly why governments came to be topping up the salaries of low-paid workers in the first place. The benefits were/are a subsidy for those businesses.
My guess is that the system worked quite well, in that it kept the employment level up at very little cost, with such top-ups functioning as a very useful, and discrete, form of quantitive easing.
That was until the Government made the demonizing of all benefit claimants its main policy. It started with the 'shirkers', but it was only a matter of time before it filtered down - or up - to the feckless, benefit-claiming'workers'!
So which is best, the Living Wage or top-up benefits?
The living wage sounds the best - why should anyone doing a proper job expect anything less?
However, some posters have pointed out that this might lead to higher paid workers wanting more, to maintain the salary difference. This then leads to inflation, and the minimum wage has to be raised again, leading to a vicious circle. Or some businesses simply aren't viable and will cease to trade.
Top-ups avoid those risks. However, they wrongly make low-paid workers a target for accusations of being scroungers, and they have the indignity of having to be assessed for benefits.
And of course, not every one is eligible. I presume (tell me if I am wrong) that like most benefits, eligibility is based on household income rather than individual. In other words, someone with a better-paid partner will get no top-up. The Living Wage does away with this unfairness (apart from the age aspect).
It's a dilemma!