Policy-Based Exclusions: Subsequent Remedial Measures, Settlements, Insurance, Pleas

When a measure is taken that would have made an earlier injury or harm less likely to occur, evidence of the subsequent measure is NOT admissible to prove negligence, culpable conduct, a defect in a product or its design, or a need for a warning or instruction. The policy is to encourage defendants to fix dangers without fear that the repair becomes a confession. Three timing points matter: (1) the measure must come AFTER the injury that gives rise to the suit; a repair made before the plaintiff's accident is not barred.

(2) The rule applies in strict-products cases (federal courts applied 407 to product-defect claims after the 1997 amendment). (3) The evidence is admissible for OTHER purposes — impeachment, or, if DISPUTED, proving ownership, control, or the feasibility of precautionary measures. MBE trap: a defendant who testifies 'there was no safer way to build it' has put feasibility in dispute and opened the door to the repair.

FRE 408 bars two things when offered to prove or disprove the validity or amount of a DISPUTED claim: (1) furnishing, promising, or offering — or accepting or offering to accept — a valuable consideration in compromising the claim, and (2) conduct or statements made during compromise negotiations. The dispute requirement is critical: there must be an actual dispute as to validity or amount, so a bare admission of an undisputed debt ('I owe you $500, but I can only pay $300') is not protected. Permitted uses include proving a witness's bias or prejudice, negating undue delay, or showing an effort to obstruct a criminal investigation.

FRE 409 separately bars offers to pay medical expenses to prove liability — but, unlike 408, FRE 409 protects ONLY the offer/payment, not collateral admissions of fact ('I'll pay your hospital bill; I ran the red light' — the red-light admission comes in). This 408-vs-409 distinction is a frequent MBE discriminator.

FRE 410 makes inadmissible against the defendant who made the plea: (1) a withdrawn guilty plea, (2) a nolo contendere (no contest) plea, (3) statements made during a Rule 11 plea proceeding, and (4) statements made during plea discussions WITH A PROSECUTOR that did not result in a guilty plea (or resulted in a later-withdrawn one). Statements to police (not the prosecutor) are generally NOT protected. The defendant can waive 410 (United States v. Mezzanatto).

FRE 411 bars evidence that a person was or was not insured against liability to prove negligence or wrongful conduct — but it IS admissible to prove a witness's bias or prejudice, or, if disputed, agency, ownership, or control. So a mechanic who tells the jury he has no stake may be impeached with proof he carries the defendant's liability coverage.

The unifying lesson of the policy exclusions is that none of them is an absolute bar — each forbids only a single forbidden inference while leaving the evidence admissible for other, properly limited purposes, and a limiting instruction (FRE 105) is available on request. FRE 407 bars the subsequent measure only to prove negligence, culpable conduct, a product defect, or a need for a warning; it remains admissible to impeach, and — when DISPUTED — to prove ownership, control, or the feasibility of precautionary measures.

The litigated battleground is feasibility: a defendant who merely denies negligence has NOT disputed feasibility, but a defendant who testifies the design was 'the safest possible' or that 'no safer alternative existed' opens the door to the post-accident fix.

FRE 408 likewise bars compromise evidence only on the validity or amount of a disputed claim, but permits it to show a witness's bias or prejudice, to negate a contention of undue delay, or to prove an effort to obstruct a criminal investigation; critically, statements of fact made during negotiations are protected under the FRE even if not themselves conciliatory, but ONLY if a genuine dispute as to validity or amount already exists when they are made.

The 408/409 contrast is a perennial discriminator: 409 shields only the offer or payment of medical expenses, never the surrounding factual admissions, so 'I'll pay your hospital bill — I ran the light' splits, with the bill-payment excluded and the red-light admission admitted. FRE 410's plea protection extends to statements made during plea discussions WITH A PROSECUTOR (or an agent with authority), not to volunteered statements to police, and the protection can be waived (Mezzanatto).

FRE 411 bars insurance evidence to prove fault but admits it to show a witness's bias (a defense expert who carries the defendant's coverage), agency, ownership, or control when disputed. The disciplined exam method is two steps: first identify the forbidden purpose the rule blocks, then ask whether the proponent offers the evidence for a permitted purpose AND whether the predicate (a dispute over feasibility, ownership, bias) has actually been raised.

California tracks these carve-outs imperfectly — CEC 1151 lacks the express feasibility exception, and CEC 1152's settlement protection is broader, reaching humanitarian and unsolicited offers — so a California answer should name the specific Evidence Code section rather than assume the federal carve-out transfers. Because these are policy and reliability rules rather than relevance rules, Proposition 8 generally does not resurrect the excluded evidence in criminal cases where the Legislature re-enacted the protection, and most of these doctrines arise in civil litigation in any event.

Policy Exclusions — Barred Purpose vs. Permitted Uses (FRE & CEC)

California reaches similar results by different code sections. CEC 1151 excludes subsequent remedial measures but is worded around negligence/culpable conduct; CA courts have been more reluctant to extend it to strict-products design claims (Ault v. International Harvester). CEC 1152 (and 1154 for offers to accept) is BROADER than FRE 408 because it also covers statements and conduct, and CA case law protects 'humanitarian' offers to pay. CEC 1153 mirrors 410 for withdrawn pleas and offers to plead. CEC 1155 bars liability-insurance evidence to prove negligence.

Because these are reliability-and-policy rules rather than relevance rules, Proposition 8 generally does NOT make this excluded evidence admissible in criminal cases where the legislature re-enacted protections, and many of these sections matter mainly in civil litigation anyway.