If you feel that flash of fear when you agree to a pre-employment background check, you may want to read this Employment Background Check Guide for Job Applicants from Daniel Bortz for Monster. He shares some insight (from me, and some other career experts) that may alleviate your concerns - or prepare you to strategize for how you will address potential issues.
I'm a certified career coach based in Philadelphia. I started my own practice to help people land their dream jobs and achieve their individual definitions of success.
I also keep this blog with my musings on changes in the employment landscape, advice for job seekers, links to other career-related articles, and anything else that catches my interest.