Dear Minal,
According to The Payment of Gratuity Act 1972, every organization must be paid gratuity amount to employees who are completed 5 years of service with 240 days in each and every year. This amount will be paid at the time of Superannuation or resignation of an employee.
The above said condition is not applicable to the death cases. In death cases 5 years of service is not a mandatory.
Off late the Govt.of India has enhanced the existing ceiling from 3,50,000 to 10,00,000. The gratuity caluculation is
Wage last drawn(Basic+DA)/26*15*No.of years of service.
Venki