The common law rule of exclusive concurrent jurisdiction applies to PAGA suits.  Nothing in the PAGA statutes clearly or unequivocally evince an intent to abrogate that well-established rule in PAGA suits.  Absence of an express first-filed suit requirement in the statute is insufficient to show such an intent.  Invoking the exclusive concurrent jurisdiction rule, the trial court properly stayed this second PAGA suit challenging the same practices and charging violation of the same Labor Code sections against the same employer.