Wisconsin § 631.81 - Notice and proof of loss.
Full text of Wisconsin Wisconsin Statutes § 631.81 — Notice and proof of loss., with citation guidance and answers to common questions.
§ 631.81. Notice and proof of loss.
631.81(1) (1) Timeliness of notice. Provided notice or proof of loss is furnished as soon as reasonably possible and within one year after the time it was required by the policy, failure to furnish such notice or proof within the time required by the policy does not invalidate or reduce a claim unless the insurer is prejudiced thereby and it was reasonably possible to meet the time limit. 631.81(2) (2) Method of giving notice. It is a sufficient service of notice or proof of loss if a 1st class postage prepaid envelope addressed to the insurer and containing the proper notice or proof is deposited in any U.S. post office within the time prescribed. The commissioner may expressly approve clauses requiring more expeditious methods of notice where that is reasonable. 631.81(3) (3) Meaning of insurer’s acts. The acknowledgment by the insurer of the receipt of notice, the furnishing of forms for filing proofs of loss, the acceptance of such proofs, or the investigation of any claim are not alone sufficient to waive any of the rights of the insurer in defense of any claim arising under the insurance contract. 631.81 History History: 1975 c. 375 . 631.81 Annotation An insured’s contradictory statements constituted a breach of the contractual duties of notice and cooperation. Dietz v. Hardware Dealers Mutual Fire Insurance Co., 88 Wis. 2d 496 , 276 N.W.2d 808 (1979). 631.81 Annotation When the insured fails to give notice within one year after the time required in the policy, there is a rebuttable presumption of prejudice, and the burden of proof shifts to the claimant to prove that the insurer is not prejudiced. Neff v. Pierzina, 2001 WI 95 , 245 Wis. 2d 285 , 629 N.W.2d 177 , 99-1069 . 631.81 Annotation An insurer is prejudiced by late notice when the insurer has been denied the opportunity to have input into how the underlying claim is being defended. An insured may not assume that if its insurer had been given the opportunity to make a timely investigation, it would have produced the same result as that produced by the insured’s own investigation or that any discovery that the insurer would have conducted would parallel that already conducted by the insured. Phoenix Contractors, Inc. v. Affiliated Capital Corp., 2004 WI App 103 , 273 Wis. 2d 736 , 681 N.W.2d 310 , 03-2259 . 631.81 Annotation Wisconsin’s notice-prejudice statutes, this section and s. 632.26, do not supersede the reporting requirement specific to claims-made-and-reported policies. Anderson v. Aul, 2015 WI 19 , 361 Wis. 2d 63 , 862 N.W.2d 304 , 13-0500 . 631.81 Annotation The Federal Employee Retirement Income Security Act (ERISA) preempts state law related to any covered employee benefit plan but does not preempt state regulation of insurance. This section regulates insurance and is not preempted. Bogusewski v. Life Insurance Co. of North America, 977 F. Supp. 1357 (1997).
Source: official Wisconsin text · Last verified 2026-08-27
Frequently Asked Questions About Wisconsin § 631.81
What does Wisconsin Statutes § 631.81 cover?
Section 631.81 ("Notice and proof of loss.") is part of the Wisconsin Statutes, the codified statutory law of Wisconsin. It sets out the legal rule or procedure described in the text above. Statutes are amended regularly, so always verify against the official source.
How do I cite Wisconsin § 631.81?
A common citation format is "Wisconsin Statutes § 631.81" (Wisconsin). Legal writing may require the code abbreviation, section number, and year or edition. Match the style required by your court, professor, or publisher.
Is this the official text of Wisconsin law?
No. This page is for research and education and may not include the most recent amendments. For official current law, check the Wisconsin official source linked on this page or consult a licensed Wisconsin attorney.
How does Wisconsin § 631.81 apply to my situation?
Statutes are interpreted in context, and application depends on your specific facts. Only a licensed attorney in Wisconsin can advise on how this section applies to you. Contact your state or local bar association for a referral.
Sources & Verification
Not legal advice. Verify against the official source and consult a licensed attorney in Wisconsin.