How much should an injured plaintiff get paid because of an injury caused by a tortfeasor? In this case, a tort plaintiff is injured, sues, and a jury found the defendant liable for damages. The jury also awarded $50,000 in economic damages. Plaintiff’s healthcare provider billed about $250,000 for treatment; the health insurance company only paid $40,000, a fact presented to the jury. Collateral sources of payment, such as payments by health insurance, do not reduce a plaintiff’s damages, because to do so would reward a tortfeasor with someone else’s money; this is the collateral source rule. The Rule excludes pre-verdict evidence of collateral payments and also offsets the collateral payments post-verdict. Here, the Court ruled that under the common-law collateral source rule, the jury should not have heard evidence of the $40,000 payment.