I have long heard and perpetuate to my students that if you are bright enough to successfully complete a PhD in the first place, finding a job which uses your hard learned skills is usually not a problem. In fact the unemployment rate for sciences and engineering PhD holders is usually quite low (low single digits in Canada).
Still, the Chronicle of Higher Education just published a piece entitled The Ph.D.s Guide to a Nonfaculty Job Search – Advice.
Ruminating... 