9.—(1) If under the relevant superannuation scheme of a person duly entitled any benefit for which the scheme provided would have been subject to reduction or suspension on his taking up other specified employment, any benefit under regulation 5(1)(a) shall, where that employment is taken up, be reduced or suspended in the like manner and to the like extent; but in calculating the amount of the reduction there shall be aggregated with the emoluments of the employment taken up the amount of any superannuation benefit by way of annual amounts payable to the person under the relevant superannuation scheme.
(2) Where a person duly entitled enters employment in which the benefits payable are subject to reduction or suspension as mentioned in paragraph (1) or ceases to hold such employment or receives any increase in his remuneration in such employment, he shall forthwith in writing inform the authority which at the time is paying to him the benefits under these regulations.