Each period (limited to the periods with 11 or more days as basis of the payment of wages) within the overall insured period when the person was an insured person, counted backwards from the day on which the person ceased to be an insured person or from the day before each day that corresponds to that day in each month and is within the overall insured period (for months that do not have a day corresponding to that day, the last day of the month; hereinafter referred to as the "substitute corresponding day" in this paragraph), to the substitute corresponding day in each previous month is calculated as a full month, and other periods are not to be included in the overall insured period; provided, however, that when the number of days in the period from the day on which the person became an insured person, to the day before the first substitute corresponding day thereafter, is 15 days or more and the number of days in the period based on which payment of wages was made is 11 days or more, the period is calculated as an insured period of half a month.
被保険者期間は、被保険者であつた期間のうち、当該被保険者でなくなつた日又は各月においてその日に応当し、かつ、当該被保険者であつた期間内にある日（その日に応当する日がない月においては、その月の末日。以下この項において「喪失応当日」という。）の各前日から各前月の喪失応当日までさかのぼつた各期間（賃金の支払の基礎となつた日数が十一日以上であるものに限る。）を一箇月として計算し、その他の期間は、被保険者期間に算入しない。ただし、当該被保険者となつた日からその日後における最初の喪失応当日の前日までの期間の日数が十五日以上であり、かつ、当該期間内における賃金の支払の基礎となつた日数が十一日以上であるときは、当該期間を二分の一箇月の被保険者期間として計算する。
The periods listed in each of the following items are not to be included when calculating the period in which the person was an insured person prescribed in the preceding paragraph, pursuant to the provisions of that paragraph:
in the case where the person had obtained recipient qualification (meaning qualification for receiving the basic allowance pursuant to the provisions of paragraph (1) of the preceding Article (including cases where that paragraph is applied pursuant to paragraph (2) of the same Article, following the deemed replacement of terms); hereinafter the same applies, except for the following Section to Section 4), the recipient qualification for the elderly prescribed in Article 37-3, paragraph (2), or the special recipient qualification prescribed in Article 39, paragraph (2), before the day on which the person last became an insured person, the period during which the person was an insured person preceding the day of separation from service pertaining to the recipient qualification, recipient qualification for the elderly, or special recipient qualification;
the period during which the person was an insured person before the day two years preceding the day on which it was confirmed that the person had become an insured person pursuant to the provisions of Article 9 (for a person prescribed in Article 22, paragraph (5), the day specified by Order of the Ministry of Health, Labour and Welfare as the earliest time at which it is evident that an amount equivalent to the amount to be borne by the insured person prescribed in item (ii) of that paragraph had been deducted from the wages paid to that person); and
in the case where the insured person has received payment of educational training leave benefits, the period during which the person was an insured person before the leave commencement day prescribed in Article 60-3, paragraph (1).
With regard to the application of the provisions of paragraph (1) in the case where the insured period calculated pursuant to the provisions of the preceding two paragraphs is less than 12 months (six months, in the case where the terms are replaced pursuant to paragraph (2) of the preceding Article), the phrase "periods with 11 or more days as basis of the payment of wages" in paragraph (1) is deemed to be replaced with "periods with 11 or more days as basis of the payment of wages or with 80 or more hours as basis of the payment of wages", and the phrase "is 11 days or more" with "is 11 days or more or the number of hours in the period based on which payment of wages was made is 80 hours or more".