1. The Walt Disney Company30,000 Employees

2. University of California, Irvine23,884 Employees

3. County of Orange17,271 Jobs

4. St. Joseph Health14,000 Jobs

5. Kaiser Permanente8,178 Jobs

6. Albertsons7,670 Jobs

7. Target Corp.: 6,300

8. WalmartInc.: 6,200

9. Hoag Memorial Hospital Presbyterian:  6,100 Jobs

10. The Boeing Company: 6,000

11. Memorial Care Health System: 5,400

12. California State University, Fullerton: 5,044

13. Bank of America Corp.: 4,800

14. Edwards Life Sciences: 4,652

15. Parker Aerospace:  4,852

16. Allied Universal: 4,187

17. Home Depot Inc.: 4,084

18. The Irvine Company4,038 Jobs

19. Cedar Fair LP: 4,000

20. UnitedHealth Group Inc.: 3,900