Christina Romer, Prof. of Economics at the University of California, Berkeley, was chairwoman of the Council of Economic Advisors under U.S. president Obama. Here she discusses the different aspects of the debate on raising the minimum wage. Romer says the negative effects on unemployment are small. The impact on consumer spending is also limited. The anti-poverty effects are real for raising the minimum wage from the current $7.25 an hour, says Romer, as over half the families earning a minimum wage make less than $40,000 an hour. President Obama called for raising the minimum wage to $9 an hour in 2013. Studies show 13 million U.S. workers earning less than $9 an hour. Raising the incomes of these families by about $3500 an year under the president's proposal gives workers badly needed income to cope with rising cost of gas, food and other basic necessities. The effects on consumer spending are small, estimated at between $10 to $20 billion. Its main virtue is keeping the principle of fairness and maintaining social cohesion at a time of increaing inequality. Romer says there is competition for workers which makes it possible for workers at the lower end to get a fair wage, but does not account for the effect of high unemployment which takes pressure off raising the minimum wage in the market economy. Another benefit for countries of keeping a fair minimum wage is that other actions can be taken to improve competitiveness for business and manufacturing and reducing the deficit and be seen in a positive context of overall improvement. This is part of the case made in Europe for boosting the mnimum wage as austerity measures are taking place....