The past 25 years: Boomers who joined the work force in the 1980s and rose through its ranks in the 90s benefited from a huge seller's market for labor. More than 40 million new jobs were created ...

National Semiconductor , which is ranked on the 2009 Fortune 1000, a list of America's largest companies. The top 100 companies on the Fortune 500 -- Fortune magazine's annual ranking of America's ...