Wise was among a few thousand fast-food workers in seven cities, including New York, Chicago and Detroit, who took to the streets last week, carrying "Strike" and "Supersize Our Wages" signs in front of McDonalds, Wendy's, Burger King and other restaurants. They demanded better pay, the right to unionize and a more than doubling of the federal minimum hourly wage from $7.25 to $15.

"We work hard for companies that are making millions," the 34-year-old Wise says, adding that he lost his home last year, unable to make mortgage payments despite working about 50-hour weeks at Pizza Hut and Burger King. "We're not asking for the world. We want to make enough to make a decent living. We deserve better. If they respect us and pay us and treat us right, it'll lift up the whole economy."

These one-day protests, which also took place in St. Louis, Milwaukee and Flint, Mich., come amid calls from the White House, some members of Congress and economists to raise the federal minimum wage, which was last increased in 2009. Most of the proposals, though, seek a more modest rise than those urged by fast-food workers. President Barack Obama wants to boost the hourly wage to $9. And in July, more than 100 economists signed a petition supporting a bill sponsored by a Florida congressman that would hike it to $10.50 an hour.