The basic daily payment amount is the amount equivalent to the average wage referred to in Article 12 of the Labor Standards Act. In this case, the day on which the grounds to calculate the average wage occurred referred to in paragraph (1) of that Article is the day on which the accident which caused the injury or death as prescribed in paragraph (1), items (i) through (iii) of the preceding Article occurs, or the date on which the occurrence of an illness prescribed in items (i) through (iii) of that paragraph was confirmed by making a diagnosis (hereinafter referred to as "the date on which the grounds for calculation occurred").
給付基礎日額は、労働基準法第十二条の平均賃金に相当する額とする。この場合において、同条第一項の平均賃金を算定すべき事由の発生した日は、前条第一項第一号から第三号までに規定する負傷若しくは死亡の原因である事故が発生した日又は診断によつて同項第一号から第三号までに規定する疾病の発生が確定した日（以下「算定事由発生日」という。）とする。
When it is deemed inappropriate to pay the amount equivalent to the average wage referred to in Article 12 of the Labor Standards Act as the basic daily payment amount, the amount calculated by the government pursuant to the provisions of Order of the Ministry of Health, Labour and Welfare is deemed to be the basic daily payment amount, notwithstanding the provisions of the preceding paragraph.
Notwithstanding the provisions of the preceding two paragraphs, the basic daily payment amount in the case where insurance proceeds are paid to a multiple-job worker, their surviving family members or other persons specified by Order of the Ministry of Health, Labour and Welfare for injury, illness, disability or death of the multiple-job worker caused in the course of their duties, by reasons attributable to the work of two or more businesses of the multiple-job worker, or while the multiple-job worker is commuting to or from work, is the amount calculated by the government pursuant to the provisions of Order of the Ministry of Health, Labour and Welfare based on the sum of the amounts equivalent to the basic daily payment amounts calculated pursuant to the provisions of the preceding two paragraphs for each business that employs the multiple-job worker.