(1) The Commonwealth is liable to pay weekly compensation for household services provided to a person if:
(a) the Commission has accepted liability for a service injury or disease of the person; and
(b) the person obtains household services that he or she reasonably requires because of the injury or disease; and
(c) a claim for compensation in respect of the person has been made under section 319.
(2) However, the Commonwealth is only liable to pay compensation in respect of an aggravated injury or disease if it is because of the aggravation or material contribution (whether wholly or partly) that the person reasonably requires the household services.