(1) Where an offence under this Act is committed by a body of persons, the following provision shall have effect.

(a) where the body of persons is a body corporate, every director of that body corporate is deemed to have also committed the offence;

(b) where the body of persons is a firm, every partner of that firm is deemed to have also committed the offence; and

(c) where the body of persons is a worker’s union or group of workers, every officer or leader of the union or group of workers is deemed to have committed the offence.

(2) A person is not deemed to have committed the offence, if the person proves that the offence was committed without his or her knowledge or that he or she exercised due diligence to prevent the commission of the offence