Section 77(2A) in Life Insurance Corporation of India (Staff) Regulations, 1960
(2A)[ In case of a Class I Officer who has been promoted from Class III cadre on or after the 1st day of April, 1973 and who dies or retires after promotion, the gratuity payable to him shall not be less than the gratuity that would have been payable to him if his services had been terminated while he was in Class III cadre.] [Notified in Gazette of India, Part-III Section 4 dated 4.11.1978.]
