Standard economic theory suggests that these problems created by income inequality are a necessary price to pay for economic efficiency: unequal rewards – however unpleasant they are and whatever consequences they have – incite those with talents, skill and perseverance to innovate and be productive. Ultimately, this serves the welfare of the whole of society. Reducing inequality means taking away incentives for doing well, and results in economic inefficiency.
Sam Bowles has argued that the opposite is true:
Inequality breeds conflict, and conflict breeds wasted resources … in a very unequal society, the people at the top have to spend a lot of time and energy keeping the lower classes obedient and productive.
Inequality leads to an excess of what Bowles calls “guard labor”. In a 2007 paper on the subject, he and co-author Arjun Jayadev, an assistant professor at the University of Massachusetts, make an astonishing claim: Roughly 1 in 4 Americans is employed to keep fellow citizens in line and protect private wealth from would-be Robin Hoods.
The job descriptions of guard labor range from “imposing work discipline”—think of the corporate IT spies who keep desk jockeys from slacking off online—to enforcing laws, like the officers in the Santa Fe Police Department paddy wagon parked outside of Walmart.
The greater the inequalities in a society, the more guard labor it requires, Bowles finds. This holds true among US states, with relatively unequal states like New Mexico employing a greater share of guard labor than relatively egalitarian states like Wisconsin.
The problem, Bowles argues, is that too much guard labor sustains “illegitimate inequalities,” creating a drag on the economy. All of the people in guard labor jobs could be doing something more productive with their time—perhaps starting their own businesses or helping to reduce the US trade deficit with China. (source)
I must say I’m not entirely convinced. Income inequality creates a lot of problems, but economic inefficiency isn’t the most important one. Justifications for the fight against inequality based on efficiency look a lot less promising than justifications based on justice and fairness.