In general, many claims involving product defects, antitrust violations, violations of consumer protection (false advertising and deceptive sales practices) laws, wage and overtime violations, illegal background checks, ERISA and insurance disputes, mass torts, securities fraud, and shareholder oppression are best pursued as class actions. Both state and federal courts hear class actions, and the procedures are generally the same. In some cases involving violations of certain federal statutes, the class action can only be brought in federal court.