Here are the Fortune 500 companies that employed the most and least older workers:

Fortune 500 Companies with the Most Older Workers

1. American Airlines; 39.157 percent of employees are age 50 and older

2. Eastman Kodak; 38.420 percent

3. TravelCenters of America; 38.387 percent

4. Delta Air Lines; 37.688 percent

5. United Airlines; 37.648 percent

6. Weyerhaeuser; 36.877 percent

7. Edison International; 36.225 percent

8. Northeast Utilities; 36.127 percent

9. Smithfield Foods; 35.948 percent

10. United Services Automobile Association; 35.459 percent

Fortune 500 Companies with the Least Older Workers

1. AECOM Technology; 6.041 percent of employees age 50 and older

2. Auto-Owners Insurance; 9.802 percent

3. Goldman Sachs Group; 11.331 percent

4. C.H. Robinson Worldwide; 12.042 percent

5. Google; 12.855 percent

6. Electronic Arts; 13.620 percent

7. Freeport-McMoRan Copper & Gold; 14.216 percent

8. Chesapeake Energy; 14.269 percent

9. Nordstrom; 14.269 percent

10. Consol Energy; 14.278 percent

Source: RetirementJobs.com