Dealing with a drop in pay is one thing, but I think a lot of people are worried about how it will affect how they qualify for things like health insurance coverage, vacation time, etc.
In the US, for IRS purposes of "you must give health insurance or pay a penalty", full-time is 30 hours a week or more. (Specifically companies with >50 employees, IIRC). So as long as you're working 30 hours a week you should be getting health insurance same as the full-time employees.
I am a freelancer. Though working on long term projects - a typical engagement would be between 1 and 3 years. I am lucky enough to live in a country where health insurance is not linked to one's employment.