Section 19(3)(a) in Life Insurance Corporation of India Class III and Class IV Employees (Revision of Terms and Conditions of Service) Rules, 1985
(a)while calculating the gratuity under the said Act, the monthly salary/ of an employee shall be deemed to be his terminal basic pay, dearness allowance, additional dearness allowance and the special allowance as specified in the proviso in sub-rule (3) of rule 4 and sub-rule (3) of rule 6.