The federal government sued Denny's restaurants Thursday, alleging that a manager who had a leg amputated was wrongly fired because her superiors believed she posed a safety risk. The Equal Employment Opportunity Commission filed the class-action lawsuit accusing Denny's of discriminating against Paula Hart and other unnamed employees... Denny's issued a statement Thursday saying the lawsuit was "based on unfounded accusations of disability discrimination stemming from the individual instance of one former employee."