judge_monthly_revision

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Decides whether a pay change forces the standard remuneration to be revised, and answers SEPARATELY for health insurance and pension — the tables differ, so a change routinely moves one and not the other. Above roughly 665,000 yen the pension table is exhausted, so a large raise for a well-paid employee moves several health grades and no pension grade. Do not try to reason this out unaided. Neither the "two grades or more" test nor the requirement that FIXED pay changed appears anywhere in 健康保険法 or its regulations — both come from 昭和36年 保発第4号, a ministerial notice, along with four exceptions near the top and bottom of each table where a single grade is enough. Overtime alone never triggers a revision, and a rise in fixed pay whose three-month average comes out LOWER is excluded even at a wide grade gap. When the answer is no, the response says which requirement failed rather than just false. If the three-month average is distorted by a seasonal peak, see judge_annual_average.