1. A person is guilty of aggravated criminal forced labor if the actor violates section 304 and the person compelled to provide labor or services having economic value has not in fact attained 18 years of age.
2. Aggravated criminal forced labor is a Class B crime.
3. It is an affirmative defense to prosecution under this section that the person engaged in aggravated criminal forced labor because the person was compelled to do so as described in section 304, subsection 1.