12.
When the proposal for arbitration has been set forth to the mayor or other executive organ of the city, town or village that made the application in accordance with paragraphs 1 to 3 of this article, and to the administrative agency of the To, Do, Fu or Ken under investigation and its acceptance recommended in accordance with the preceding paragraph, the local dispute arbitrators shall immediately submit a report to the Minister for Home Affairs on the purport of the proposal and the progress of the arbitration, accompanied by a copy of the proposal for arbitration.
13.
The arbitration shall be deemed concluded when written acceptances of the arbitration proposal mentioned under paragraph 11 have been received by the Minister for Home Affairs from the mayor or other executive organ of the city, town or village and from the administrative agency of the To, Do, Fu or Ken, before which the proposal for arbitration has been set forth. In such case, the Minister for Home Affairs shall immediately give public notice of the same and of the purport of the arbitration and shall also notify the said mayor or other executive organ of the city, town or village and the administrative agency of the To, Do, Fu or Ken of the same.
14.
When documents have been submitted by the mayor or other executive organ of the city, town or village and the administrative agency of the To, Do, Fu or Ken in accordance with the preceding paragraph, the Minister for Home Affairs shall notify the local dispute arbitrators of the same.
15.
The matters listed below shall be decided by the mutual consent of the local dispute arbitrators:
1. Determination under paragraph 1 of article 250-14 applied mutatis mutandis in line with paragraph 5 of this article, as to whether the involvement of the To, Do, Fu or Ken is unreasonable from the point of view of the independence and autonomy of an ordinary local public body, and the determination of recommendations in accordance with the same paragraph.
2. Determination under paragraph 2 of article 250-14 applied mutatis mutandis in line with paragraph 5 of this article, as to whether the involvement of the To, Do, Fu or Ken is illegal, and the determination of recommendations in accordance with the same paragraph.
3. Determination under paragraph 3 of article 250-14 applied mutatis mutandis in line with paragraph 6 of this article, as to whether the application under paragraph 2 is with reason or not, and determination of the recommendation under paragraph 3 of article 250-14 applied mutatis mutandis in line with paragraph 6 of this article.