A lot of clients provide us with "before" and "after" photographs. The story goes something like this:
The first photo shows what the _________________ looked like before a I fell. My husband went back the next day and they’d fixed _______________. That shows they were negligent!
Unfortunately "after" photos aren’t admissible to prove that someone was negligent.
Rule 407 deals with what are called "Subsequent Remedial Measures". It reads:
When, after an injury or harm allegedly caused by an event, measures are taken that, if taken previously, would have made the injury or harm less likely to occur, evidence of the subsequent measures is not admissible to prove negligence, culpable conduct, a defect in a product, a defect in a product’s design, or a need for a warning or instruction. This rule does not require the exclusion of evidence of subsequent measures when offered for another purpose, such as proving ownership, control, or feasibility of precautionary measures, if controverted, or impeachment.
Here’s the explanation of thinking behind Rule 407:
The rule incorporates conventional doctrine which excludes evidence of subsequent remedial measures as proof of an admission of fault. The rule rests on two grounds. (1) The conduct is not in fact an admission, since the conduct is equally consistent with injury by mere accident or through contributory negligence. Or, as Baron Bramwell put it, the rule rejects the notion that "because the world gets wiser as it gets older, therefore it was foolish before." Under a liberal theory of relevancy this ground alone would not support exclusion as the inference is still a possible one. (2) The other, and more impressive, ground for exclusion rests on a social policy of encouraging people to take, or at least not discouraging them from taking, steps in furtherance of added safety. The courts have applied this principle to exclude evidence of subsequent repairs, installation of safety devices, changes in company rules, and discharge of employees, and the language of the present rules is broad enough to encompass all of them.
The second sentence of the rule directs attention to the limitations of the rule. Exclusion is called for only when the evidence of subsequent remedial measures is offered as proof of negligence or culpable conduct. In effect it rejects the suggested inference that fault is admitted. Other purposes are, however, allowable, including ownership or control, existence of duty, and feasibility of precautionary measures, if controverted, and impeachment. Two recent federal cases are illustrative. Boeing Airplane Co. v. Brown, 291 F.2d 310 (9th Cir. 1961), an action against an airplane manufacturer for using an allegedly defectively designed alternator shaft which cuased a plane crash, upheld the admission of evidence of subsequent design modification for the purpose of showing that design changes and safeguards were feasible. And Powers v. J. B. Michael & Co., 329 F.2d 674 (6th Cir. 1964), an action against a road contractor for negligent failure to put out warning signs, sustained the admission of evidence that defendant subsequently put out signs to show that the portion of the road in question was under defendant’s control. The requirement that the other purpose be controverted calls for automatic exclusion unless a genuine issue be present and allows the opposing party to lay the groundwork for exclusion by making an admission. Otherwise the factors of undue prejudice, confusion of issues, misleading the jury, and waste of time remain for consideration under Rule 403.
In every case we have "after" photos we seek to introduce them for the purposes allowed under Rule 407. But they–by themselves–do not prove that the defendant was negligent.