As Citigroup announces more mass layoffs, find out which companies have fired the most people in 2012.
Citigroup has announced plans slash more than 11,000 jobs or about 4 percent of its global workforce in one of the biggest single layoffs of 2012. Here are the year's other top layoff kings, as compiled by Business Insider.
Maricopa County Sheriff
Warner Bros. Entertainment
Montgomery County Sheriff Office
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