Section 19: Power to review decisions

19. Power to review decisions (1) Any decision on a claim for an allowance under this Act may be reviewed at any time, in the case of a decision of an awarding officer or of an appeal tribunal, by an awarding officer, and in the case of a decision of an umpire, by an umpire, where the awarding officer or umpire, as the case may be, is satisfied that that such decision was given in ignorance of, or was based on a mistake as to, some material fact. (2) Any decision on a claim for an allowance under this Act may be reviewed at any time by an awarding officer where he is satisfied that, since the date of the decision, there has been a relevant change of circumstances. (3) The awarding officer or umpire, as the case may be, may give a revised decision to have effect either as from the same date as the original decision or from a subsequent date. (4) A claimant who is dissatisfied with the revised decision of an awarding officer may appeal against such revised decision in accordance with sections 17 and 18.