| [Commutation of annuity. 90. Any payment in commutation of annuity shall not exceed— 
			
				| (a) |   | in a case where the employee receives any gratuity, the commuted value of [one-third] of the annuity which he is normally entitled to receive, and |  
				| (b) |   | in any other case, the commuted value of [one-half] of such annuity, |  such commuted value being determined having regard to the age of the recipient, the state of his health, the rate of interest and officially recognised tables of mortality.]     |