Yes, his dependents should be paid gratuity. The service gratuity is calculated based on his last drawn salary. If his service was less than 1.5 years, pay him as if his service is one year. If his service exceeds 6 months in the second year, pay him gratuity for two years. If you have taken insurance, then get the amounts from the insurers. Obviously, if the policy covers death cum gratuity, the dependents of the deceased will receive better gratuity, which is computed on the presumption of service until his superannuation.