You are correct, Hemu; gratuity becomes payable irrespective of the completion of the minimum qualifying service if the employee dies in harness. The place or reason for death is immaterial.
Gratuity Calculation Under PGA, 1972
Since the basic unit of the duration of service rendered for the purpose of the calculation of gratuity under the PGA, 1972, is one year, a shorter spell of service like 3 months on the date of death will really be a problem for the employer to tackle with humanitarian consideration only. Had the employer taken a special gratuity insurance policy with a life cover on payment of some additional premium, the insurer will pay the gratuity for the entire service up to 58 years of age of the deceased employee.
Humanitarian Considerations and Options
If not, payment of the minimum gratuity for one year plus some sizable sum by way of ex-gratia as well as employment on compassionate grounds to the legal heir of the deceased if possible is the only befitting option in this extraordinary case.
This suggestion is purely based on humanitarian consideration only. If there is a will, there is a way. After all, charity begins at home only, and so is Corporate Social Responsibility!