People with college degrees or more had a 4.4% unemployment rate as of June 2010. It was 10.8 percent for those with only a high school education. See Want To Avoid Unemployment?: Statistics show a clear link between education level and employment.
Now it may not be that simple. People who graduate from college may be smarter and harder working than others (being smart and hard working helps you get through college). And people who are smart and hard working will probably get better jobs and have lower unemployment rates. That would be true of a world that had no college degrees.
But most likely, ceteris paribus, education helps. The article also mentions some high paying careers.