Clarifies prohibitions regarding provisions that may not be included in agreements between employers and former, current or prospective employees. Specifies circumstances under which certain prohibited provisions may be included in agreements that release claim brought against employer for certain unlawful conduct. Establishes conduct that constitutes violation of prohibitions. Creates exemptions to prohibitions. Allows recovery of civil penalties for certain violations. Requires mediator in mediation concerning allegations of certain unlawful conduct to provide person who is party to mediation and who is not represented by attorney with copy of certain policies concerning prevention of certain unlawful conduct. Provides that mediation communications relating to certain allegations of misconduct are not confidential and may be admitted as evidence.] Requires employers to provide copy of employer's written policies against unlawful discrimination and harassment to person with whom employer seeks to enter into certain agreements.