A residual (partial) disability benefit pays when the insured:

解析

A residual disability benefit applies when the insured can work but, due to the ongoing effects of the disability, earns less than before; the benefit is generally paid in proportion to the percentage of income lost. It is not for total permanent disability (which pays full benefits), not for full recovery with no lost income, and not for voluntary retirement. The residual benefit bridges the gap between total disability and full recovery by covering a partial loss of earnings.