Members may be excluded from the association at any time. The articles of association may determine the reasons for an exclusion or provide for exclusions without stating any reasons. If the latter is the case, an appeal against the exclusion can only be filed on the grounds of formal errors. If the articles of association do determine the reasons for an exclusion, members may only be excluded for important reasons and by a resolution of the association. Important reasons are the violation of the association’s interests or damages to the association. Members must get a hearing before their exclusion (fair hearing).