A residual benefit in a disability insurance policy provides partial benefits if the insured returns to work in a reduced capacity and suffers a loss of income. Patricia’s income has decreased from $4,000 to $3,000, representing a 25% reduction in income ($1,000 loss out of $4,000). Since her policy provides a residual benefit, she will receive 25% of her original monthly benefit, which is 25% of $2,400, amounting to $600. This is calculated to supplement her reduced earnings, aligning with the guidelines on residual benefits provided by LLQP​.