But their lives are connected. They both work in the fast-food industry — Mr. Carrillo at a McDonald’s in Midtown Manhattan and Mr. Williams at a Wendy’s in Brooklyn. They both earn a little more than $7 an hour. And they both need food stamps to survive. Last Thursday, both did something they had never done before: they went on strike.

Their activism, part of a flash strike of some 200 workers from fast-food restaurants around New York City, caps a string of unorthodox actions sponsored by organized labor, including worker protests outside Walmart stores, which, like most fast-food chains, are opposed to being unionized, and union drives at carwashes in New York and Los Angeles.

Labor unions are hoping that the unusual tactics, often in collaboration with social justice activists and other community groups, will offer them a new opportunity to get back on the offensive, helping to raise the floor for wages and working conditions in the harsh, ultracompetitive economy of the 21st century.

Mr. Carrillo’s and Mr. Williams’s meager salaries also underscore the straightforward choice we face as a nation: either we build an economy in which most workers can earn enough to adequately support their families or we build a government with the wherewithal to subsidize the existence of a lower class that can’t survive on its own. We are doing neither.

More than two million workers toil in food preparation jobs at limited-service restaurants like McDonald’s, according to government statistics. They are the lowest-paid workers in the country, government figures show, typically earning $8.69 an hour. A study by the Economic Policy Institute, a liberal-leaning research organization, concluded that almost three-quarters of them live in poverty. And they are unlikely to have ever contemplated joining a union.

On a full-time schedule, they could make a little over $18,000 a year, just about enough to keep a family of two parents and one child at the threshold of poverty. But full-time work is hard to come by. With fast-food restaurants increasingly using scheduling software to adjust staffing levels, workers can no longer count on a steady stream of work. Their hours can be cut sharply from one week to the next based on the business outlook or even the weather.

Orley Ashenfelter, a labor economist at Princeton, published a study earlier this year that captured the plight of workers under the Golden Arches in a novel way: measuring pay by the burgers a worker could buy for an hour of work, he calculated that the real wages of McDonald’s workers in the United States hit about 2.2 Big Macs an hour last year. That’s 15 percent less than in 2000.

Many economists will argue that concern about the lowly McJob is misplaced. These jobs offer a wage to people with no training or education. Mr. Carrillo, for instance, doesn’t speak English. “To get a better job at my age, you need a profession,” he says. To improve the lives of American workers, most economists argue, we might do better by focusing on education to equip them with the skills to perform more productive, better-paid jobs.

But this argument overlooks the fact that the McJob is hardly a niche of the labor market reserved for the uneducated few. Rather, it might be the biggest job of our future.

The American labor market has been hollowing out for decades — losing many of the middle-skilled, relatively well-paid jobs in manufacturing that can be performed more cheaply by machines or workers overseas. It has split between a high end of well-educated workers, and a low end of less-educated workers performing jobs, mostly in the service sector, that cannot be outsourced or mechanized.

This process is not expected to reverse any time soon. According to government statistics, personal care aides will make up the fastest-growing occupation this decade. The Economic Policy Institute study found that some 57 percent of them live in poverty.

This poses an existential question for labor unions, which are struggling because of the loss of union jobs to automation and stiff competition, both from cheaper labor in the mostly union-free South and developing nations around the world: can they do something to improve workers’ lot?

They have in the past. A recent study by the International Labor Organization concluded that low-wage work was rare where unionization rates were high. In countries where more than half of workers belong to a union, only 12 percent of jobs pay less than two-thirds of the middle wage, on average.

Still, there is little reason to believe that American labor unions can do much to lift the floor on wages in the future. Fewer than 7 percent of workers in the private sector are in a union. We have the largest share of low-paid jobs in the industrial world, amounting to almost one in four full-time workers, according to the International Labor Organization. And our rates of unionization continue to fall.

E-mail: eporter@nytimes.com; Twitter: @portereduardo

Article source: http://www.nytimes.com/2012/12/05/business/unionizing-at-the-low-end-of-the-pay-scale.html?partner=rss&emc=rss