第五条
Supplementary Provisions, Article 5
The amount of the retirement allowance for a covered employee under a retirement allowance mutual aid contract under which premiums have at any time been paid at a monthly premium of less than 400 yen, who retires on or after the Effective Date, is, notwithstanding Article 10, paragraph (2) of the New Act, the total of the amounts calculated under each of the following items (if the amount has a fraction of less than one yen, it is rounded up to one yen); provided, however, that where the retirement is due to death and that total is less than the total amount of premiums paid, the amount of the retirement allowance is the amount equivalent to the total amount of premiums paid.
for each 100 yen of a monthly premium of 400 yen or less, one quarter of the amount specified in the middle column of Appended Table 1 of the New Act according to the number of months for which premiums were paid (where, among the number of months for which premiums were paid, there are months relating to a period during which the mutual aid policyholder was an employer other than a small and medium-sized enterprise, the amount obtained by adding, to the amount specified in the right-hand column of that table according to the number of months for which premiums were paid, the amount obtained by subtracting the amount specified in the right-hand column from one quarter of the amount specified in the middle column of that table according to the number of months for which premiums were paid relating to the period during which the mutual aid policyholder was a small and medium-sized enterprise);
for each 100 yen of a monthly premium exceeding 400 yen, the amount specified in the right-hand column of that table according to the number of months for which premiums were paid.
四百円をこえる掛金月額について、その百円ごとに、掛金の納付があつた月数に応じ同表の下欄に定める金額
定義第二条第一項・法令全体に適用
次の各号のいずれかに該当する事業主（国、地方公共団体その他厚生労働省令で定めるこれらに準ずる者を除く。）
わかりやすく言うと
常時雇用する従業員の数か、法人の資本金または出資の総額が業種ごとの基準以下の事業主です。卸売業は百人以下か一億円以下、サービス業は百人以下か五千万円以下、小売業は五十人以下か五千万円以下、その他は三百人以下か三億円以下です。国、地方公共団体とこれらに準ずる者は除きます。
定義第二条第三項・法令全体に適用
事業主が独立行政法人勤労者退職金共済機構（第五十六条及び第五十七条を除き、以下「機構」という。）に掛金を納付することを約し、機構がその事業主の雇用する従業員の退職について、この法律の定めるところにより、退職金を支給することを約する契約であつて、特定業種退職金共済契約以外のもの
わかりやすく言うと
事業主が独立行政法人勤労者退職金共済機構に掛金を納めることを約束し、機構がその事業主に雇われている従業員の退職について、この法律に従って退職金を支給することを約束する契約のことです。特定業種退職金共済契約は含みません。