(2)Before constitution of a common cadre under sub-section (1), the Director in cases of Colleges, and the Inspector of Schools having jurisdiction, in cases of schools, shall furnish detailed information relating to the terms and conditions of service prescribed for such cadre to every employee belonging to that cadre with a notice requiring him to exercise his option within such period, not being less than thirty days and more than forty-five days, as may be specified therein, for absorption or otherwise in such cadre.