574.2. The Commission may impose and is deemed to have always had the power to impose on an employer that it considered personally liable for the payment of benefits under the Workers’ Compensation Act (chapter A-3) an assessment to defray the costs incurred under this Act in relation to a recurrence, a relapse or an aggravation of an injury or disease resulting from an industrial accident suffered or an occupational disease reported by one of the employer’s workers while the employer was personally liable for the payment of benefits. For the purpose of fixing the assessment, the Commission exercises its powers under section 343 of this Act, with the necessary modifications.