On Thursday, fast food workers in 190 cities across the U.S. are planning to walk off the job protesting unionization rights and minimum wage increases. The work stoppages will greatly affect McDonalds. Cities such as San Francisco and Seattle have already agreed to raise minimum wage for fast food workers to $15 an hour.
See "Fast-food Workers Plan to Strike in 190 U.S. Cities", Bruce Kennedy, CBS News, December 3, 2014