(1) A person shall be disqualified for receiving injury benefit or disablement benefit (including any increase thereof) for such period not exceeding 9 weeks as may be determined under the provisions of the Principal Act if he or she fails without good cause -

(a) to attend for, or to submit to, medical examination in accordance with sub-article (4),

(b) to submit to such medical treatment for the injury or loss of faculty as a result of which injury benefit or disablement benefit is claimed by or is payable to him or her, as is considered appropriate in his or her case by the registered medical practitioner in charge of the case or by a registered medical practitioner to whose examination the person has submitted in accordance with this article (provided that he or she shall not be disqualified for receiving injury benefit or disablement benefit for refusal to undergo a surgical operation not being one of a minor character).

(2) A person shall be disqualified for receiving injury benefit or an increase of disablement benefit by way of incapacity supplement for such period not exceeding 9 weeks as may be determined under the Act if he or she fails without good cause -

(a) to comply with any instructions relating to his or her incapacity issued by a registered medical practitioner attending on him or her or whom he or she attended for medical or other examination,