Where a right to a payment inuring for the benefit of any authority, body or person is conferred in respect of any matter by any provision of this Act for payment of compensation or for indemnity, and apart from this subsection there would fall to be made under any enactment or agreement passed or made before the passing of this Act a payment inuring for the benefit of the same authority, body or person in respect of the same matter, the right to the former payment in so far as it inures for the benefit of that authority, body or person shall be treated as being in or towards satisfaction of the right to the latter in so far as it inures for their or his benefit.

Where a right to a payment in respect of any matter inuring for the benefit of the same authority, body or person is conferred by each of two or more provisions of this Act for payment of compensation or for indemnity, they or he shall be entitled to claim under such one only of those provisions as they or he may elect to enforce.