Just in case you've been living in a non-business aviation world and haven't seen the latest articles regarding the IRS, Worker's comp and liability, take a look at these scanned documents. The short version is that if you are billing as an individual and not protected by being a business entity you are flirting with disaster. Read on. (you will need a PDF reader for these files)
BCA Magazine Article (February 2006)
AIN Magazine Article (March 2006)
AIN Others (May 2006) sorry for poor quality scan.