“9. In State of Kerala v. M. Padmanabhan Nair [State of Kerala v. M. Padmanabhan Nair, (1985) 1 SCC 429 : 1985 SCC (L&S) 278] , this Court has held that pension and gratuity are no longer any bounty to be distributed by the Government to its employees on the retirement but are valuable rights in their hands, and any culpable delay in disbursement thereof must be visited with the penalty of payment of interest. In the said case the Court approved 6% p.a. interest on the amount of pension decreed by the trial court and affirmed [State of Kerala v. Padmanabhan Nair, 1983 SCC OnLine Ker 205 : 1984 KLT 542] by the High Court. As to the rate of interest on amount of gratuity, in Section 7(3-A) of the Payment of Gratuity Act, 1972, it is provided that if the amount of gratuity payable is not paid by the employer within the period specified in sub-section (3), the employer shall pay, from the date on which gratuity becomes payable to the date on which it is paid, simple interest at such rate, not exceeding the rate notified by the Central Government from time to time for repayment of long-term deposits, as that Government may by notification specify. It further provides that no such interest shall be payable if the delay in payment is due to the fault of the employee, and the employer has obtained permission in writing from the controlling authority for the delayed payment on this ground. In the present case, there is no plea before us that the appellants had sought any permission in writing from the controlling