After recent speculation that the minimum wage could be frozen or cut in cash terms, Vince Cable used his speech at The Institute of Directors to announce that the adult rate would increase by 1.9 per cent (12p) to £6.31 an hour, the under-21s rate by 5p to £5.03 and the under-18s rate by 4p to £3.72.
In justifying the increase, against those on the right who argue that the minimum wage prices workers out of employment, Cable cited the Keynesian insight that "cuts in real wages depress consumption and demand and thereby cause unemployment." Cable is right; low earners are forced to spend, rather than save, what little they receive (their "marginal propensity to consume" is greater) and stimulate growth as a result.
It's worth noting, then, that the minimum wage has just been cut in real-terms. CPI inflation was 2.8 per cent in February and RPI inflation was 3.2 per cent. The former is forecast by the Office for Budget Responsibility to average 2.8 per cent this year. Indeed, as the Resolution Foundation's James Plunkett recently noted, in real-terms, the minimum wage has already fallen back to its 2004 level.
Today's decision will by described by most of the media as an "increase" but by the best measure economists have - the cost of living - it's a cut.
In this area, as elsewhere, the coalition would do well to follow the example of Barack Obama, who has pledged to increase the minimum wage to $9 an hour, from $7.25, and to peg annual increases to inflation thereafter.