[Excerpt] In 2013, 75.9 million workers age 16 and older in the United States were paid at hourly rates, representing 58.8 percent of all wage and salary workers. Among those paid by the hour, 1.5 million earned exactly the prevailing federal minimum wage of $7.25 per hour. About 1.8 million had wages below the federal minimum. Together, these 3.3 million workers with wages at or below the federal minimum made up 4.3 percent of all hourly paid workers.