Dear Chithambararaj,
The Section 2A of The Payment of Gratuity Act, itself says that:
*Continuous service.- For the purposes of this Act,--
(1) an employee shall be said to be in continuous service for a period if he has, for that period, been in uninterrupted service,including service which may be interrupted on account of sickness, accident, leave, absence from duty without leave (not being absence in respect of which an order 3*** treating the absence as break in service has been passed in accordance
with the standing orders, rules or regulations governing the employees of the establishment), lay-off, strike or a lock-out or cessation of work not due to any fault of the employee, whether such uninterrupted or interrupted service was rendered before or after the commencement of this Act;
(2) where an employee (not being an employee employed in a seasonal establishment) is not in continuous service within the meaning of clause (1), for any period of one year or six
months, he shall be deemed to be in continuous service under the employer--
(a) for the said period of one year, if the employee during the period of twelve calendar months preceding the date with reference to which calculation is to be made, has actually
worked under the employer for not less than--
(i) one hundred and ninety days, in the case of an employee employed below the ground in a mine or in an establishment which works for less than six days in a week; and
(ii) two hundred and forty days, in any other case;
Hope this is help you.