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WASHINGTON (WUSA9) -- Thursday,federal contract workers at McDonald's in the Smithsonian's National Air and Space Museum walked off their jobs. They then rallied outside the museum, calling for President Obama to sign an executive order ensuring companies doing business with the federal government pay a livable wage.

Their efforts arepart of a 100-city strike regarding living wages.

The strike marks the first time Good Jobs Nation workers have joined the fast-food workers strikes.

"While McDonald's rakes in tons of money from its contract with the federal government, I have to walk to work because I can't even afford the bus fare," said Alexis Vasquez, a striking federal contract worker at the McDonald's inside the Smithsonian Air and Space Museum in a press release."The President says he wants to reduce inequality and create good jobs - he should start by paying the two million federally-contracted workers like me a decent wage."

Federally contracted Union Station, Smithsonian Museum, and Ronald Reagan Building workers have gone on strike five times since May. Ronald Reagan workers alsofiled a formal complaint with the Department of Labor alleging wage theft, including wages below the minimum wage and forcing workers to put in well over 40 hours per week without overtime pay. The Labor Department opened an investigation into wage theft.