; or (B) such conduct has the purpose or effect of interfering with a child performer's performance, or creates an intimidating, hostile, or offensive working environment; and (4) the term individual in a supervisory role with respect to a child performer means an employee or independent contractor of an employer or other entity that employs or contracts with a child performer who has direct supervision over the child performer or is responsible for working with the child performer in any capacity in furtherance of the performance or artistic expression of the child performer, including an agent, manager, casting director, child wrangler, director, photographer or cinematographer, makeup artist, and wardrobe assistant. 4. Review of policies and procedures by employers In any case where a violation of section 3(a) is alleged, the employer of the individual or individuals alleged to have committed the violation shall conduct an internal review of its policies and procedures for protecting child performers and ensuring compliance with section 13(c)(3) of the Fair Labor Standards Act of 1938 ( 29 U.S.C. 213(c)(3) ), as amended by section 2. 5. Relationship to State law and collective bargaining agreements (a) State law This Act and the amendments made by this Act shall not be construed to preempt any law or regulation of a State or a political subdivision of a State containing requirements that are greater than the requirements of this Act and the amendments made by this Act. (b) Collective bargaining agreements This Act and the amendments made by this Act shall not be construed to preempt any collective bargaining agreement or any contract that establishes more stringent requirements.