What are the labor laws relating to EMT's (24 hr shifts/On Call)?

I am planning to work at a summer camp as an EMT. I know I will be required to be on-call 24 hours a day. I am interested to find out the laws about how many days I can work in a row, how many days off are required, and how I am paid (overtime, etc.). I haven't signed any contracts yet and I want to be prepared. Thanks!

Usually, federal or state EMT laws cover those working on ambulances. In the law books it is written as "ambulance driver or attendant" (which is kind of demeaning if you ask me).
USUALLY, these laws also only apply to paid EMS, and not volunteer. A volunteer squad can technically set their own rules on hours and such.
For an EMT, in California, and probably most other states, require an employer to provide any EMT working 24 hour shifts with adequate dormitory and kitchen facilities. You must have 8 hours of uninterrupted sleep, and 3 meal times, each of them 1 hour minimum. If an employer is in compliance with these rules, then they will only have to pay for 13 hours of work.
However, if not, they will be required to pay daily overtime. Daily overtime is any hours worked over 8, which means you would get overtime for 16 hours.
Once again I stress that this for ambulance EMTs. It is my educated guess that an EMT working at places such as camps are not regulated by state or federal EMS laws. However, I would imagine, if you are living on the camp itself, it is not considered a "8-hour workday" job, so you probably wont be paid overtime.