Well, it does seem different in different states. I've just done a quick search and the legal language =
It is also not clear to me whether Jon's injunction preventing the children from being filmed is temporary and/or merely for the location (i.e. the house). I'm sure it is challengable by Kate. I think it will be dealt with as part of the custody agreement. I rather pity the Judge in this case.
For what it is worth: California's Coogan Law has been used as a model for other states i.e. New Mexico and NY but is not applicable in all states. The Coogan Law is fairly minimal -- money earned by a child working as an actor belongs to the child, and a giant 15% of the child's gross earnings must be placed in trust. If I am reading correctly it has been modified several times to close loop-holes, most recently in 2004. Child Labor Law in CA takes care of other aspects, like education and hours worked. It covers 100% of minor actors. The Screen Actors Guild web page has a link to the full text.
New York's Coogan Law is very similar, but also includes some language re. education. I think the NM version was filed after the Child Nation controversy, but have not looked for it yet. As I said:
PA has no Coogan Law, but there are good provisions to protect child labor extant regarding hours and educational opportunities. Remember that
PA is still investigating whether TLC and the Gosselins have violated Child Labor Law or have merely exploited loopholes. Here is the link, and the relevant section is 7.1 if you scroll down the page --
http://www.dli.state.pa.us/landi/CWP/view.asp?a=185&Q=58124
I think I need a nap after reading all that legalese!