It shall not be lawful for any employer to deduct from the wages of any of his employees any part of the cost of insurance as provided for in § 65.2-801 to insure liability, or to require or permit any of his employees to contribute in any manner toward such cost of insurance. For any violation of the provisions of this section, an employer shall be subject to a fine not exceeding $100 for each offense and shall refund to the individual employee the amount or amounts deducted or contributed. The fine herein provided may be assessed and the refund ordered by the Workers’ Compensation Commission in an open hearing with the right of review and appeal as in other cases.