If childcare leave prescribed in Article 2, item (i) of the Act on the Welfare of Workers Taking Child Care or Family Care Leave to Care for Children or Other Family Members (Act No. 76 of 1991), leave through a measure equivalent to the system for childcare leave prescribed in Article 23, paragraph (2) of the same Act or a measure taken in the same manner as the system for childcare leave prescribed in item (ii) of the same paragraph pursuant to the provisions of Article 24, paragraph (1) of the same Act, or childcare leave based on laws and regulations specified by Cabinet Order (hereinafter referred to as "childcare leave") taken by an insured person ends and the person is taking care of a child less than three years of age to which the childcare leave pertains on the last day of the childcare leave (referred to as "last day of childcare leave" hereinafter in this Article) after submitting a request to the insurer via the employer of the place of business employing the person as specified by Order of the Ministry of Health, Labour and Welfare, the standard monthly remuneration amount is revised by setting the amount obtained by dividing the total amount of remuneration received for the three months beginning with the month which includes the day following the last day of childcare leave (limited to a period of consecutive employment at the place of business employing the person on the day following the last day of childcare leave; and excluding any month in which the number of days based on which remuneration is paid is less than 17 days) by the number of months in that period as the monthly remuneration amount, notwithstanding the provisions of Article 41; provided, however, that this does not apply to an insured person who commences the maternity leave prescribed in paragraph (1) of the following Article on the day following the last day of childcare leave.
保険者等は、育児休業、介護休業等育児又は家族介護を行う労働者の福祉に関する法律（平成三年法律第七十六号）第二条第一号に規定する育児休業、同法第二十三条第二項の育児休業に関する制度に準ずる措置若しくは同法第二十四条第一項（第二号に係る部分に限る。）の規定により同項第二号に規定する育児休業に関する制度に準じて講ずる措置による休業又は政令で定める法令に基づく育児休業（以下「育児休業等」という。）を終了した被保険者が、当該育児休業等を終了した日（以下この条において「育児休業等終了日」という。）において当該育児休業等に係る三歳に満たない子を養育する場合において、その使用される事業所の事業主を経由して厚生労働省令で定めるところにより保険者等に申出をしたときは、第四十一条の規定にかかわらず、育児休業等終了日の翌日が属する月以後三月間（育児休業等終了日の翌日において使用される事業所で継続して使用された期間に限るものとし、かつ、報酬支払の基礎となった日数が十七日未満である月があるときは、その月を除く。）に受けた報酬の総額をその期間の月数で除して得た額を報酬月額として、標準報酬月額を改定する。ただし、育児休業等終了日の翌日に次条第一項に規定する産前産後休業を開始している被保険者は、この限りでない。
A standard monthly remuneration amount revised pursuant to the provisions of the preceding paragraph is the standard monthly remuneration amount for each month since the month following the month which includes the day on which two years have elapsed since the day following the last day of childcare leave until August in that year (August in the following year if that following month is any of September to December).