Here is good article on the dangers of misclassifying employees as independent contractors. Below is the main point (sorry for the horn toot):
Attorney James Rubin has been hearing a lot from underpaid and confused employees lately. Most of them work in construction or landscaping, but Rubin, principal of The Rubin Employment Law Firm PC in [Rockville], says he also is hearing from workers in fields like nursing and government contracting.
These workers have more in common than being confused and underpaid: They are all from Maryland, and many have been improperly classified as contractors when they should be considered employees by the companies that sign their paychecks.