Sixty percent of hiring managers say they are more likely to hire an older worker over a millennial at 20 percent, according to a new survey from Adecco Staffing US, a recruitment and work force solutions provider, conducted by Braun Research Inc.

Even 91 percent of respondents believe older workers are more reliable, and 88 percent of respondents call them more professional.

"The rise of mature workers in today's workforce is a direct result of economic and societal factors," says Joyce Russell, president of Adecco Staffing US. "These are individuals who long ago paid their dues, and given their years of experience and work ethic, they make excellent job candidates and strong employees—and the results of this survey show how overwhelmingly appreciated and valued they are by hiring managers."