From the Department of Labor, The Employment Situation January 2010 PDF news release.
I also found the People Are Asking (which is in a box in the middle of the homepage) from the FAQs to be helpful. For example:
Question: When must breaks and meal periods be given?
Answer: The Fair Labor Standards Act (FLSA) does not require breaks or meal periods be given to workers. Some states may have requirements for breaks or meal periods. If you work in a state which does not require breaks or meal periods, these benefits are a matter of agreement between the employer and the employee (or the employee's representative).