depend upon the date to be decided by the ESI Corporation and the State Government. In such a situation, even the possibility of an employee who has exercised his option attaining the age of superannuation and retiring from service before the effective date of absorption to be decided by the Corporation and the Government also cannot be ruled out. All these indicate that a person can exercise option for absorption should be on the rolls of the hospital, as on the date of take over. If he is not an employee, on the date on which the option is exercised, he cannot resign from service, as contemplated under clause (3) of Ext.P1, in order to be absorbed into the services of the ESI Corporation on the date to be decided by the Government and the ESI Corporation. This, necessarily, cannot apply to the petitioners, for the reason that even prior to taking over of the hospitals, they had ceased to be Government employees. Therefore, their claim that irrespective of the date of take over, and their attaining the age of superannuation, the right to seek absorption into ESI Corporation should be determined, with