身边的经济学·社会常识英语30篇（5）

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批次索引养老金调整日程如何降低财政不确定性

Pension increases are not applied uniformly but follow staggered, batch-indexed schedules.
Retirees born in different decades receive adjustments in separate fiscal batches.
Each batch’s adjustment rate links to inflation data captured during its designated reference period.
This prevents sudden, system-wide cost surges that could destabilize pension fund reserves.
Legislators approve batch parameters years in advance, locking in multi-year liabilities.
Actuaries model long-term solvency using batch-specific demographic and economic assumptions.
Beneficiaries anticipate changes based on their assigned batch number, not calendar year.
Batch indexing thus converts open-ended entitlement promises into bounded fiscal commitments.
It also allows gradual policy corrections without retroactive benefit cuts.
Such sequencing makes pension sustainability both measurable and politically governable.