After Dong resigned, the organizational structure of Company A did not comply with the law. The reason is that according to Article 52 of China's Company Law, the board of supervisors of a limited liability company should have at least three members. A limited liability company with fewer shareholders or smaller scale may have only one or two supervisors instead of a board of supervisors. Article 118 stipulates that when a joint stock limited company establishes a board of supervisors, its members shall not be less than three. Therefore, in general, the board of supervisors needs more than three people.