(b) The court in any action brought under this article may, in the event that any judgment is awarded to the plaintiff or plaintiffs, assess costs of the action, including reasonable attorney fees against the defendant. Such attorney fees in the case of actions brought under this section by the commissioner shall be remitted by the commissioner to the treasurer of the state. The commissioner shall not be required to pay the filing fee or other costs or fees of any nature or to file bond or other security of any nature in connection with such action or with proceedings supplementary thereto, or as a condition precedent to the availability to the commissioner of any process in aid of such action or proceedings. The commissioner shall have power to join various claimants in one claim or lien, and in case of suit to join them in one cause of action.