10. Health care and social assistance
With an average employer contribution of 84 cents per hour worked, this industry makes a modest contribution to employee retirement benefits. However, the health care industry has some of the fastest-growing employment numbers of any industry, according to the BLS. Employment for registered nurses, for example, is expected to increase by 26 percent from 2010 to 2020, which is 12 percentage points higher than the average growth rate.