The following links (compiled with the help of Dan Haybron) include recent discussions, studies, and testimonies about the benefits of studying philosophy.
The growing popularity of the philosophy major, New York Times
Philosophers find degree pays off in life and work, also from the New York Times
"I think therefore I earn"--more on the job prospects for philosophy majors
The value of a philosophy degree, London Times
Philosophy isn't just for rich folks: a personal story.
NOTE: read salary data about majors with caution. Graduates in a certain major may earnmore because they attended better colleges, sought higher-paying jobs, are smarter to begin with, etc. In other words, it is not necessarily the case that majoring in a given subject, by itself, improved their career prospects.