(1) Subject to this section, the process of the court for compelling the attendance of the respondent and all necessary witnesses shall be instituted at the expense of the Federal Government and without any fees of court.
(2) At the final determination of the complaint the court may make such order for the payment of costs by either party as it thinks proper in the circumstances.
(3) If at the hearing of the complaint, the court is of the opinion that the complaint is vexatious or frivolous it may, there and then and without any fresh action or proceeding, order that the complainant shall-
(a) pay a fine not exceeding N50 and defray the cost of the process and the witnesses; and
(b) in default of payment of the fine and costs, be liable to imprisonment for a period not exceeding one month.
Section 85 of the Labour Act in Nigeria