If the office of any Director appointed by the Company in General Meeting is vacated before his term of office expires in the normal course, the resulting casual vacancy may, in default of and subject to any regulations in the articles of the company, be filled by the Board of Directors at a meeting of the Board which shall be subsequently approved by members in the immediate next General Meeting. Any person so appointed shall hold office only up to the date up to which the Director in whose place he is appointed would have held office if it had not been vacated. [Section 161(4)]
Generally, Casual Vacancy in the Office of Director happens under the following situations
Director shall be appointed by two ways to fill the Casual Vacancy
A. Appointment of an Additional Director to fill the Casual Vacancy
Refer the Procedure for Appointment of Additional Director
B. Appointment of a Director by Members in General Meeting to fill the Casual Vacancy
Refer the Procedure for Appointment of Director.