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Domestic Relations Case Procedure Act

家事事件手続法(かじじけんてつづきほう)

Chapter I General Provisions (Articles 255 to 266)

The law as Act Partially Amending the Civil Code, etc. (Act No. 45 of 2026) leaves it, with the words it changes marked.

The main text is read a page at a time: a chapter to a page, and a long chapter in runs of articles. The whole main text, and the supplementary provisions and appended tables this amendment changes. Those it leaves untouched are on the page for the text in force.

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Section 2 Petitions for Mediation of Domestic Relations第二節 家事調停の申立て等

Article 255第二百五十五条

Petition for Mediation of Domestic Relations(家事調停の申立て)
Article 255, paragraph (1)

A petition for mediation of domestic relations must be filed by submitting a written petition (referred to as a "written petition for mediation of domestic relations" in the following paragraph and the following Article) to a family court.

家事調停の申立ては、申立書(次項及び次条において「家事調停の申立書」という。)を家庭裁判所に提出してしなければならない。

Article 255, paragraph (2)

A written petition for mediation of domestic relations must state the following matters:

家事調停の申立書には、次に掲げる事項を記載しなければならない。

Article 255, paragraph (2), item (i)

the party (parties) and the legal representative(s); and

当事者及び法定代理人

Article 255, paragraph (2), item (ii)

the object of and reasons for the petition.

申立ての趣旨及び理由

Article 255, paragraph (3)

An immediate appeal may be filed against a ruling to dismiss a petition for mediation of domestic relations as unlawful.

家事調停の申立てを不適法として却下する審判に対しては、即時抗告をすることができる。

Article 255, paragraph (4)

The provisions of Article 49, paragraphs (3) through (6) and Article 50 (excluding the proviso to paragraph (1)) apply mutatis mutandis to a petition for mediation of domestic relations. In this case, the term "paragraph (2)" in Article 49, paragraph (4) is deemed to be replaced with "Article 255, paragraph (2)".

第四十九条第三項から第六項まで及び第五十条(第一項ただし書を除く。)の規定は、家事調停の申立てについて準用する。この場合において、第四十九条第四項中「第二項」とあるのは、「第二百五十五条第二項」と読み替えるものとする。

Article 256第二百五十六条

Sending of Copies of Written Petitions for Mediation of Domestic Relations(家事調停の申立書の写しの送付等)
Article 256, paragraph (1)

When a petition for mediation of domestic relations is filed, the family court must send a copy of a written petition for mediation of domestic relations to the respondent, except when the petition is unlawful or when it closes the case for mediation of domestic relations pursuant to the provisions of Article 271 without holding a date for proceedings for mediation of domestic relations; provided, however, that if it is found that there is a risk of interfering with the smooth progress in proceedings for mediation of domestic relations, the family court may give notice to the respondent of the fact that a petition for mediation of domestic relations is filed, in lieu of sending a copy of a written petition for mediation of domestic relations.

家事調停の申立てがあった場合には、家庭裁判所は、申立てが不適法であるとき又は家事調停の手続の期日を経ないで第二百七十一条の規定により家事調停事件を終了させるときを除き、家事調停の申立書の写しを相手方に送付しなければならない。ただし、家事調停の手続の円滑な進行を妨げるおそれがあると認められるときは、家事調停の申立てがあったことを通知することをもって、家事調停の申立書の写しの送付に代えることができる。

Article 256, paragraph (2)

The provisions of Article 49, paragraphs (4) through (6) apply mutatis mutandis when it is impossible to send a copy of a written petition for mediation of domestic relations or to give notice in lieu of sending the copy under the provisions of the preceding paragraph, and the provisions of Article 67, paragraphs (3) and (4) apply mutatis mutandis to the prepayment of costs for sending a copy of a written petition for mediation of domestic relations or for giving notice in lieu of sending the copy under the provisions of the preceding paragraph.

第四十九条第四項から第六項までの規定は前項の規定による家事調停の申立書の写しの送付又はこれに代わる通知をすることができない場合について、第六十七条第三項及び第四項の規定は前項の規定による家事調停の申立書の写しの送付又はこれに代わる通知の費用の予納について準用する。

Article 257第二百五十七条

Principle of Mediation First(調停前置主義)
Article 257, paragraph (1)

A person who intends to file an action on a case where a mediation may be possible pursuant to the provisions of Article 244 must first file a petition for mediation of domestic relations with a family court.

第二百四十四条の規定により調停を行うことができる事件について訴えを提起しようとする者は、まず家庭裁判所に家事調停の申立てをしなければならない。

Article 257, paragraph (2)

When a person files an action on the case set forth in the preceding paragraph without filing a petition for mediation of domestic relations, the court must, by its own authority, refer the case to a mediation of domestic relations; provided, however, that this does not apply when the court finds it to be inappropriate to refer the case to mediation.

前項の事件について家事調停の申立てをすることなく訴えを提起した場合には、裁判所は、職権で、事件を家事調停に付さなければならない。ただし、裁判所が事件を調停に付することが相当でないと認めるときは、この限りでない。

Article 257, paragraph (3)

When the court refers a case pursuant to the provisions of the preceding paragraph, it must have the case processed by a family court which has jurisdiction over the case; provided, however, that when it finds it to be particularly necessary in order to process a case for mediation of domestic relations, it may have the case processed by a family court other than the family court which has jurisdiction over the case.

裁判所は、前項の規定により事件を調停に付する場合においては、事件を管轄権を有する家庭裁判所に処理させなければならない。ただし、家事調停事件を処理するために特に必要があると認めるときは、事件を管轄権を有する家庭裁判所以外の家庭裁判所に処理させることができる。

Section 3 Proceedings for Mediation of Domestic Relations第三節 家事調停の手続

Article 258第二百五十八条

Application Mutatis Mutandis of Provisions Concerning Proceedings for the Adjudication of Domestic Relations(家事審判の手続の規定の準用等)
Article 258, paragraph (1)

The provisions of Articles 41 through 43 apply mutatis mutandis to the intervention in or exclusion from proceedings for mediation of domestic relations; the provisions of Article 44 apply mutatis mutandis to the taking over of proceedings for the mediation of domestic relations; the provisions of Articles 51 through 55 apply mutatis mutandis to a date for proceedings for mediation of domestic relations; the provisions of Articles 56 through 62 and Article 64 apply mutatis mutandis to the investigation of facts and examination of evidence in proceedings for mediation of domestic relations; the provisions of Article 65 apply mutatis mutandis to understanding the intention of a child, etc. in proceedings for mediation of domestic relations; the provisions of Articles 73, 74, 76 (excluding the proviso to paragraph (1)), 77, and 79 apply mutatis mutandis to a ruling regarding mediation of domestic relations; and the provisions of Article 81 apply mutatis mutandis to a judicial decision other than a ruling regarding mediation of domestic relations.

第四十一条から第四十三条までの規定は家事調停の手続における参加及び排除について、第四十四条の規定は家事調停の手続における受継について、第五十一条から第五十五条までの規定は家事調停の手続の期日について、第五十六条から第六十二条まで及び第六十四条の規定は家事調停の手続における事実の調査及び証拠調べについて、第六十五条の規定は家事調停の手続における子の意思の把握等について、第七十三条、第七十四条、第七十六条(第一項ただし書を除く。)、第七十七条及び第七十九条の規定は家事調停に関する審判について、第八十一条の規定は家事調停に関する審判以外の裁判について準用する。

Article 258, paragraph (2)

A court that is commissioned to examine the facts in proceedings for mediation of domestic relations pursuant to the provisions of Article 61, paragraph (1) as applied mutatis mutandis pursuant to the preceding paragraph may, when it finds it to be appropriate, have a court clerk conduct the investigation of facts as commissioned; provided, however, that this does not apply when a commissioned family court finds it to be appropriate to have a family court investigating officer conduct the examination of facts as commissioned.

前項において準用する第六十一条第一項の規定により家事調停の手続における事実の調査の嘱託を受けた裁判所は、相当と認めるときは、裁判所書記官に当該嘱託に係る事実の調査をさせることができる。ただし、嘱託を受けた家庭裁判所が家庭裁判所調査官に当該嘱託に係る事実の調査をさせることを相当と認めるときは、この限りでない。

Article 258, paragraph (3)

The provisions of Article 152-2 apply mutatis mutandis to a mediation case for a disposition regarding cooperation and mutual assistance between a husband and wife, a mediation case for a disposition regarding the sharing of living expenses (meaning a mediation case regarding the matters set forth in Appended Table 2, row (2)), a mediation case for a disposition regarding the custody of a child (limited to a mediation case for a disposition regarding the sharing of expenses required for the custody of a child), a mediation case for a disposition regarding the division of property (meaning a mediation case regarding the matters set forth in row (4) of that table), and a mediation case regarding divorce; the provisions of Article 152-3 apply mutatis mutandis to a mediation case for a disposition regarding the custody of a child (excluding a mediation case for a disposition regarding the sharing of expenses required for the custody of a child) and a mediation case regarding divorce; and the provisions of Article 184-2 apply mutatis mutandis to a mediation case for a determination of the extent or method of support, and change or revocation of the determination (meaning a mediation case regarding the matters set forth in row (10) of that table), respectively.

第百五十二条の二の規定は夫婦間の協力扶助に関する処分の調停事件、婚姻費用の分担に関する処分の調停事件(別表第二の二の項の事項についての調停事件をいう。)、子の監護に関する処分の調停事件(子の監護に要する費用の分担に関する処分の調停事件に限る。)、財産の分与に関する処分の調停事件(同表の四の項の事項についての調停事件をいう。)及び離婚についての調停事件について、第百五十二条の三の規定は子の監護に関する処分の調停事件(子の監護に要する費用の分担に関する処分の調停事件を除く。)及び離婚についての調停事件について、第百八十四条の二の規定は扶養の程度又は方法についての決定及びその決定の変更又は取消しの調停事件(同表の十の項の事項についての調停事件をいう。)について、それぞれ準用する。

Article 259第二百五十九条

Control over Proceedings for Mediation of Domestic Relations Conducted by a Mediation Committee(調停委員会が行う家事調停の手続の指揮)
Article 259, paragraph (1)

Proceedings for mediation of domestic relations conducted by a mediation committee are subject to the control of a judge who composes the mediation committee.

調停委員会が行う家事調停の手続は、調停委員会を組織する裁判官が指揮する。

Article 260第二百六十条

Power of Mediation Committees(調停委員会等の権限)
Article 260, paragraph (1)

When a mediation committee conducts a mediation of domestic relations, the power of a court in relation to the following matters is exercised by the mediation committee:

調停委員会が家事調停を行う場合には、次に掲げる事項に関する裁判所の権限は、調停委員会が行う。

Article 260, paragraph (1), item (i)

permission, etc. for a counsel under the provisions of Article 22;

第二十二条の規定による手続代理人の許可等

Article 260, paragraph (1), item (ii)

permission, etc. for an assistant in court under the provisions of Article 60, paragraphs (1) and (2) of the Code of Civil Procedure as applied mutatis mutandis pursuant to Article 27;

第二十七条において準用する民事訴訟法第六十条第一項及び第二項の規定による補佐人の許可等

Article 260, paragraph (1), item (iii)

permission for attendance under the provisions of proviso to Article 33;

第三十三条ただし書の規定による傍聴の許可

Article 260, paragraph (1), item (iv)

consolidation of proceedings, etc. under the provisions of Article 35;

第三十五条の規定による手続の併合等

Article 260, paragraph (1), item (v)

amendment to a petition under the provisions of Article 50, paragraphs (3) and (4) as applied mutatis mutandis pursuant to the provisions of Article 255, paragraph (4); and

第二百五十五条第四項において準用する第五十条第三項及び第四項の規定による申立ての変更

Article 260, paragraph (1), item (vi)

intervention in proceedings under the provisions of Article 41, paragraphs (1) and (2) and Article 42, paragraphs (1) through (3) and (5), exclusion from proceedings under the provisions of Article 43, paragraph (1), taking over of proceedings under the provisions of Article 44, paragraphs (1) and (3), summoning a person concerned with a case under the provisions of Article 51, paragraph (1), conducting proceedings by the method of communication through audio transmissions under the provisions of Article 54, paragraph (1), and the investigation of facts and examination of evidence (excluding the particulars concerning a non-criminal fine and subpoena) under the provisions of Article 56, paragraph (1), Article 59, paragraphs (1) through (3) (including the cases where applied mutatis mutandis pursuant to Article 60, paragraph (2)), Article 61, paragraph (1), Article 62, and Article 64, paragraph (5), as well as under the provisions of the Code of Civil Procedure as applied mutatis mutandis pursuant to Article 64, paragraph (1), as applied mutatis mutandis pursuant to Article 258, paragraph (1).

第二百五十八条第一項において準用する第四十一条第一項及び第二項並びに第四十二条第一項から第三項まで及び第五項の規定による参加、第四十三条第一項の規定による排除、第四十四条第一項及び第三項の規定による受継、第五十一条第一項の規定による事件の関係人の呼出し、第五十四条第一項の規定による音声の送受信による通話の方法による手続並びに第五十六条第一項、第五十九条第一項から第三項まで(これらの規定を第六十条第二項において準用する場合を含む。)、第六十一条第一項、第六十二条並びに第六十四条第五項の規定並びに同条第一項において準用する民事訴訟法の規定による事実の調査及び証拠調べ(過料及び勾引に関する事項を除く。)

Article 260, paragraph (2)

When a mediation committee conducts proceedings for mediation of domestic relations, the power of the presiding judge in relation to the appointment, etc. of a counsel under the provisions of Article 23, paragraphs (1) and (2), the designation of a date for proceedings under the provisions of Article 34, paragraph (1), and the preparation of a record under the provisions of the proviso to Article 253 is exercised by a judge who composes the mediation committee.

調停委員会が家事調停を行う場合には、第二十三条第一項及び第二項の規定による手続代理人の選任等、第三十四条第一項の規定による期日の指定並びに第二百五十三条ただし書の規定による調書の作成に関する裁判長の権限は、当該調停委員会を組織する裁判官が行う。

Article 261第二百六十一条

Investigation of Facts and Examination of Evidence by a Judge Who Composes Mediation Committee(調停委員会を組織する裁判官による事実の調査及び証拠調べ等)
Article 261, paragraph (1)

A judge who composes a mediation committee may, by a resolution of the mediation committee, investigate facts and examine evidence.

調停委員会を組織する裁判官は、当該調停委員会の決議により、事実の調査及び証拠調べをすることができる。

Article 261, paragraph (2)

In the case referred to in the preceding paragraph, a judge may have a family court investigating officer examine facts or a technical official of the court who is a physician diagnose the physical and mental condition of a person concerned with a case.

前項の場合には、裁判官は、家庭裁判所調査官に事実の調査をさせ、又は医師である裁判所技官に事件の関係人の心身の状況について診断をさせることができる。

Article 261, paragraph (3)

The provisions of Article 58, paragraphs (3) and (4) apply mutatis mutandis to the investigation of facts and the diagnosis of the physical and mental condition of the person under the provisions of the preceding paragraph.

第五十八条第三項及び第四項の規定は、前項の規定による事実の調査及び心身の状況についての診断について準用する。

Article 261, paragraph (4)

In the case referred to in paragraph (1), a judge may, when the judge finds it to be appropriate, have a court clerk investigate facts; provided, however, that this does not apply when the judge finds it to be appropriate to have a family court investigating officer examine facts.

第一項の場合には、裁判官は、相当と認めるときは、裁判所書記官に事実の調査をさせることができる。ただし、家庭裁判所調査官に事実の調査をさせることを相当と認めるときは、この限りでない。

Article 261, paragraph (5)

A judge who composes a mediation committee may, by a resolution of the mediation committee, have a family court investigating officer take the measures under the provisions of Article 59, paragraph (4).

調停委員会を組織する裁判官は、当該調停委員会の決議により、家庭裁判所調査官に第五十九条第四項の規定による措置をとらせることができる。

Article 262第二百六十二条

Investigation of Facts by Domestic Relations Mediation Commissioner(家事調停委員による事実の調査)
Article 262, paragraph (1)

A mediation committee may, when it finds it to be appropriate, have a domestic relations mediation commissioner who composes the mediation committee investigate facts; provided, however, that this does not apply when it finds it to be appropriate to have a family court investigating officer examine the facts.

調停委員会は、相当と認めるときは、当該調停委員会を組織する家事調停委員に事実の調査をさせることができる。ただし、家庭裁判所調査官に事実の調査をさせることを相当と認めるときは、この限りでない。

Article 263第二百六十三条

Commissioning of Hearing Opinions(意見の聴取の嘱託)
Article 263, paragraph (1)

A mediation committee may commission another family court or a summary court to hear the opinion of a party concerned with a case with regard to the resolution of a dispute.

調停委員会は、他の家庭裁判所又は簡易裁判所に事件の関係人から紛争の解決に関する意見を聴取することを嘱託することができる。

Article 263, paragraph (2)

A family court that is commissioned to hear opinions under the provisions of the preceding paragraph may, when it finds it to be appropriate, have a domestic relations mediation commissioner hear opinions as commissioned.

前項の規定により意見の聴取の嘱託を受けた家庭裁判所は、相当と認めるときは、家事調停委員に当該嘱託に係る意見を聴取させることができる。

Article 264第二百六十四条

Hearing of the Expert Opinion of a Domestic Relations Mediation Commissioner(家事調停委員の専門的意見の聴取)
Article 264, paragraph (1)

A mediation committee may, when it finds it to be necessary, hear the opinions of a domestic relations mediation commissioner who is not a member of the mediation committee, based on the commissioner's expert knowledge and experience.

調停委員会は、必要があると認めるときは、当該調停委員会を組織していない家事調停委員の専門的な知識経験に基づく意見を聴取することができる。

Article 264, paragraph (2)

A domestic relations mediation commissioner whose opinions are heard pursuant to the provisions of the preceding paragraph is designated by a family court.

前項の規定により意見を聴取する家事調停委員は、家庭裁判所が指定する。

Article 264, paragraph (3)

A domestic relations mediation commissioner who is designated under the provisions of the preceding paragraph is to attend a mediation committee and state opinions.

前項の規定による指定を受けた家事調停委員は、調停委員会に出席して意見を述べるものとする。

Article 265第二百六十五条

Place of Mediation(調停の場所)
Article 265, paragraph (1)

A mediation committee may mediate a case at an appropriate place outside a court, in consideration of the circumstances of the case.

調停委員会は、事件の実情を考慮して、裁判所外の適当な場所で調停を行うことができる。

Article 266第二百六十六条

Disposition Prior to Mediation(調停前の処分)
Article 266, paragraph (1)

While a case for mediation of domestic relations is pending, a mediation committee may issue a disposition that it finds to be necessary for mediation.

調停委員会は、家事調停事件が係属している間、調停のために必要であると認める処分を命ずることができる。

Article 266, paragraph (2)

If there are pressing circumstances, a judge who composes a mediation committee may order the disposition set forth in the preceding paragraph (hereinafter referred to as a "disposition prior to mediation").

急迫の事情があるときは、調停委員会を組織する裁判官が前項の処分(以下「調停前の処分」という。)を命ずることができる。

Article 266, paragraph (3)

A disposition prior to mediation does not have enforceability.

調停前の処分は、執行力を有しない。

Article 266, paragraph (4)

If a party or interested party intervenor who has been ordered to take a necessary measure as a disposition prior to mediation does not comply with the order without justifiable grounds, a family court punishes the party or interested party intervenor by a non-criminal fine of up to 100,000 yen.

調停前の処分として必要な事項を命じられた当事者又は利害関係参加人が正当な理由なくこれに従わないときは、家庭裁判所は、十万円以下の過料に処する。

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