(1) A person who, immediately before the date of assuming office as the Chief Election Commissioner or an Election Commissioner, was in service of Government may be granted during his tenure of office but not thereafter, leave in accordance with the rules for the time being applicable to the Service to which he belonged before such date and he shall be entitled to carry forward the amount of leave standing at his credit on such date, notwithstanding any thing contained in section 6.
         (2) Any other person who is appointed as the Chief Election Commissioner or an Election Commissioner may be granted leave in accordance with such rules as are for the time being applicable to a member of the Indian Administrative Service.
         (3) The power to grant or refuse leave to the Chief Election Commissioner or an Election Commissioner and to revoke or curtail leave granted to him, shall vest in the President.