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HomeCommercial CodeDiv. 3Ch. 4§ 3406 Negligence In Instrument Forgery

§ 3406 Negligence In Instrument Forgery

Commercial Code·California
AI Summary·Official Text·Key Terms·Related Statutes·References
AI SummaryVerified

§ 3406 Negligence In Instrument Forgery

Key Takeaways

  • •If you didn't pay attention and that helped someone fake or change a check or document, you can't complain later if someone else honestly uses it.
  • •If both sides didn't pay attention and that caused money loss, the blame is shared based on who messed up more.
  • •The person who says the other didn't pay attention has to prove it.

Example

You sign a blank check and leave it on your desk at work. Your coworker fills it out to themselves for $1000 and cashes it. The bank pays it, thinking it's real.

You can't blame the bank for paying the fake check because you didn't keep it safe. You didn't exercise ordinary care by leaving it blank and out in the open.

AI-generated — May contain errors. Not legal advice. Always verify source.

Official Source
View on CA.gov

§ 3406 Negligence In Instrument Forgery

(a) A person whose failure to exercise ordinary care contributes to an alteration of an instrument or to the making of a forged signature on an instrument is precluded from asserting the alteration or the forgery against a person who, in good faith, pays the instrument or takes it for value or for collection. (b) Under subdivision (a), if the person asserting the preclusion fails to exercise ordinary care in paying or taking the instrument and that failure contributes to loss, the loss is allocated between the person precluded and the person asserting the preclusion according to the extent to which the failure of each to exercise ordinary care contributed to the loss. (c) Under subdivision (a), the burden of proving failure to exercise ordinary care is on the person asserting the preclusion. Under subdivision (b), the burden of proving failure to exercise ordinary care is on the person precluded. (Repealed and added by Stats. 1992, Ch. 914, Sec. 6. Effective January 1, 1993.)

Last verified: January 23, 2026

Key Terms

ordinary carealterationforgerygood faithburden of proving

Related Statutes

  • § 3403 Unauthorized Signature Effectiveness
  • § 3404 Impostor-Induced Instrument Endorsement
  • § 3407 Fraudulent Instrument Alterations
  • § 3418 Recovery For Mistaken Payment
  • § 3420 Instrument Conversion Liability

References

  • Official text at leginfo.legislature.ca.gov
  • California Legislature. Commercial Code. Section 3406.
View Official Source