According to Section 168 of the Companies Act 2013 A director may resign from his office by giving a notice in writing to the company and the Board shall on receipt of such notice take note of the same and the company shall intimate the Registrar in such manner, within such time and in such form as may be prescribed and shall also place the fact of such resignation in the report of directors laid in the immediately following general meeting by the company. A director shall also forward a copy of his resignation along with detailed reasons for the resignation to the Registrar within thirty days of resignation in such manner as may be prescribed.
Rule 16 of the Companies (Appointment and Qualification of Directors) Rules 2014 prescribed that where a director resigns from his office, he shall within a period of thirty days from the date of resignation, forward to the Registrar a copy of his resignation along with reasons for the resignation in Form DIR – 11 along with the fee as provided in the Companies (Registration Offices and Fees) Rules, 2014.