How Evidence of Subsequent Remedial Measures Matters

Federal Rule of Evidence 407 prohibits plaintiffs from introducing evidence of subsequent remedial measures to show that the defendant is to blame. Among its purported justifications, the rule prevents hindsight bias from unduly influencing jury decisions. Nonetheless, plaintiffs often take advantage of the rule's numerous exceptions to introduce evidence of remedial measures for other purposes (e.g. to prove feasibility). Fearing that the exceptions could swallow the rule, some courts will even exclude evidence that fits into one of these exceptions because it is ostensibly too prejudicial. Alternatively, other courts instruct juries that they should only use the evidence for the limited permissible purpose, but not for proving blameworthiness.