
Protesters burn an effigy of Philippine President Benigno Aquino III during a rally near the president's Malacanang Palace in Manila on Labor Day, Tuesday, May 1, 2012. (AP Photo/Bullit Marquez)

Protesters burn an effigy of Philippine President Benigno Aquino III during a rally near the president's Malacanang Palace in Manila on Labor Day, Tuesday, May 1, 2012. (AP Photo/Bullit Marquez)

Virginia Gov. Bob McDonnell announces his education agenda Monday for the legislature at the Capitol in Richmond as (from left) Luca Rickey, Zane Childress and Caroline Saady listen. His No. 1 push will be to repeal the so-called Kings Dominion law that says schools cannot open until after Labor Day. (Associated Press)

Former Massachusetts Gov. Mitt Romney, a Republican presidential candidate, and Ann, his wife of 42 years, serve up a Labor Day pancake breakfast in Manchester, N.H., She wears the white apron with the ease of a woman who spent countless mornings flipping flapjacks for five hungry sons. "It's going to happen this time," she said. (Associated Press)

Republican presidential candidate and former Massachusetts Gov. Mitt Romney speaks to a crowd during a Labor Day pancake breakfast on Sept. 5, 2011 in Manchester, N.H. (Associated Press)

"Giving everybody a shot, everybody a chance to share in America's prosperity, from the factory floor to the boardroom. That's what unions are all about," President Obama told a rally in Detroit Monday following a parade of union workers on Labor Day. He said his administration is "fighting for good jobs with good wages." (Associated Press)

President Obama waves to supporters during a Labor Day speech at the Renaissance Center, headquarters of General Motors, in Detroit on Monday, Sept. 5, 2011. (AP Photo/Pablo Martinez Monsivais)

A hotel is reflected in puddles of rain from approaching Tropical Storm Lee at a streetcar track, as a streetcar passes through Lee Circle, in New Orleans, Friday, Sept. 2, 2011. Lee formed in the waters off Louisiana on Friday, threatening a drenching along much of the Gulf coast over the Labor Day weekend with up to 20 inches (50 centimeters) of rain in some spots. (AP Photo/Gerald Herbert)

Traffic begins to back up at the Chesapeake Bay Bridge near Annapolis over the Labor Day weekend last year. More than 900,000 D.C.-area residents are expected to travel over the Independence Day weekend. (Associated Press)