The defendant insured filed a claim of loss with the plaintiff insurer under a business owner’s policy of insurance, the claimed loss arising from a reported break-in at the insured’s business premises. Following a prompt investigation giving rise to reasonable suspicion that the break-in may have been an “inside job,” the insurer requested that the insured produce certain financial documentation and submit to an examination under oath. The insured failed without explanation to appear at the first scheduled examination, and was nonresponsive in material respects at two rescheduled examinations. The insured refused throughout to produce the requested financial records, finally doing so only after the insurer filed this action in which it sought, among other things, a judgment declaring that the insured’s failure to comply with policy obligations requiring its cooperation relieved the insurer of any liability to the insured for the claimed loss.

*332After a jury-waived trial, the judge concluded that the defendant insured had committed a material breach of its obligations under the policy and in so doing had caused the insurer prejudice. Nonetheless, because the judge determined that such prejudice could be cured by an order requiring the insured to pay the insurer’s costs and attorney’s fees, he refused the declaratory relief that the insurer requested. The insurer appeals, maintaining that the judge erred in failing to declare that the insured’s material breach of conditions precedent precluded the insured from recovery under the policy of insurance. We agree and reverse that aspect of the judgment.

Background. The judge’s findings of fact are not challenged on appeal and are, in any event, amply supported by the record evidence. The facts pertinent to the issue before us are these.

The insured, Cape Cod Custom Home Theater, Inc., is a corporation formed in early 2000, and since its inception, its sole stockholder and only officer has been Richard Baxter. The business is located in the town of Mashpee on Cape Cod and sells and installs high-end home theater audio and video equipment. At all relevant times, the insured had a business owner’s insurance policy with the insurer, Hanover Insurance Company. Section E.3. of the policy required the insured to “[cjooperate with [the insurer] in the investigation or settlement of [any] claim” made under the policy, to permit the insurer to examine its books and records, and to submit to examinations under oath “about any matter relating to [the] insurance or [a] claim” brought under the policy.

The insured claimed a substantial loss under the policy following a reported July 17, 2002, break-in at its showroom. The insurer promptly investigated and a number of factors came to light that provided the insurer with “a good faith basis to believe that this alleged loss may have had the involvement of Mr. Baxter, and ... the reasonable suspicion that this was a ‘set-up,’ and that, therefore, further investigation should take place.”1

The insurer requested Baxter’s participation in an examina*333tion under oath scheduled for November 1, 2002, and also asked that he bring with him certain documents. Without explanation, Baxter neither appeared for the examination nor produced the documents. The examination was again scheduled and Baxter appeared on November 8, 2002, with his then lawyer, Ricky Weiner. According to the judge’s findings, “nothing productive occurred. There was no response to any legitimate questions that were raised by counsel, and ... the refusal to answer questions was unreasonable. Moreover, the conduct of Attorney Ricky Weiner in that instance was unprofessional in too many regards to list . . . .’’At that examination, counsel for the insurer “demonstrated to the opposing counsel the relevance of certain requests for information, particularly, evidence concerning . . . Baxter’s assets, financial circumstances, loan history, debt obligations, documents concerning the above, as well as his personal income tax returns.”

Baxter and his counsel apparently walked out of the November examination and continued to withhold the requested documents. They were not supplied at or before the resumption of Baxter’s examination under oath on December 13, 2002, “when . . . Baxter appeared with counsel[. A]gain, the court notes the abject noncompliance with basic standards of decency as a lawyer involved in litigation of consequence, but, more importantly in terms of this case, notes that under the direction of counsel, . . . Baxter refused to provide the kind of material relevant information that was legitimately sought by [the insurer].”2

In view of the foregoing and the seeming futility of further *334efforts to gather the information it reasonably deemed necessary, the insurer then denied the claim and brought this action on January 13, 2003, seeking declaratory relief.3 Shortly thereafter, the insured finally produced the financial documentation that the insurer had sought. No further examination of Baxter under oath apparently took place after the documents were made available. After trial, in 2006, the judge concluded that the insured had “violated [the] provisions of the contract for insurance which required him to generally cooperate but also to appear and to give meaningful testimony at an examination under oath and also to produce documents.” The judge also ruled that “[wjhile ordinarily this would have allowed [the insurer] to deny coverage, the court finds that the obvious prejudice to [the insurer] by the stubborn and unfounded refusal to timely submit to an examination under oath, and to provide relevant documents, can be remedied by an order to pay costs and [attorney’s] fees .... The court finds that the [insured] required [the insurer] to obtain the judgment of this court on this issue, such that an assessment of costs through the completion of trial is appropriate and just.”4

*335Discussion. There can be no serious question here that the insured’s conduct constituted a material breach of the insurance contract. The question is whether, in the circumstances, those breaches admit of any remedy short of precluding the insured from recovering under the policy. It is well established that under the cooperation clauses generally included in insurance contracts, insureds have a general obligation to cooperate with their insurer during any investigation of claims made under such policies, Mello v. Hingham Mut. Fire Ins. Co., 421 Mass. 333, 340 n.6 (1995) (Mello), and that when an insurer’s demand for cooperation is reasonable and the insurer has acted in good faith and with due diligence, an insurer may be relieved of liability for claims in certain circumstances where an insured commits a material breach of a cooperation clause. Imperiali v. Pica, 338 Mass. 494, 499 (1959). Insurers for their part are obliged to communicate promptly with the insured, investigate claims promptly, and confirm or deny coverage of such claims promptly. See G. L. c. 176D, § 3, and G. L. c. 93A, § 9(1).

We noted in Lorenzo-Martinez v. Safety Ins. Co., 58 Mass. App. Ct. 359, 364 (2003), that in situations where information material to a claim investigation is “primarily or exclusively within the possession of the insured,” the provision requiring submission to an examination under oath is particularly important for obtaining corroboration of a claim and possibly weeding out fraud. “Because of the insurer’s heightened need for reliable information from the insured in such cases, we are of the opinion that the obligation to submit to an examination under oath is distinguishable from other obligations of the insured under the insurance contract, in which breach and actual prejudice must be shown.” Ibid. See Mello, 421 Mass, at 336-337. See also MetLife Auto & Home v. Cunningham, 59 Mass. App. Ct. 583, 589-590 (2003), quoting from Waste Mgmt., Inc. v. International Surplus Lines Ins. Co., 144 Ill. 2d 178, 204 (1991). Mandating cooperation by the insured “weed[s] out fraud by providing an insurer with a mechanism for obtaining formal corroboration of a claim,” Lorenzo-Martinez v. Safety Ins. Co., supra at 364; see Mello, supra at 337, and thereby enables an insurer to discharge its obligations promptly.

Hence, an insurer’s request for an examination under oath, if *336reasonable under the circumstances, is “strictly construed as a condition precedent to the insurer’s liability.” Mello, supra at 337. Rymsha v. Trust Ins. Co., 51 Mass. App. Ct. 414, 417 (2001). See Cohen v. Commercial Cas. Ins. Co., 277 Mass. 460, 462 (1931). “A condition precedent defines an event which must occur before ... an obligation to perform arises under [a] contract.” Twin Fires Inv., LLC v. Morgan Stanley Dean Witter & Co., 445 Mass. 411, 420 (2005), quoting from Massachusetts Mun. Wholesale Elec. Co. v. Danvers, 411 Mass. 39, 45 (1991).

Recently, we had occasion to observe that, as a general rule, an insurer may not disclaim coverage by virtue of an insured’s breach of its duty to cooperate absent a showing of prejudice. Boffoli v. Premier Ins. Co., 71 Mass. App. Ct. 212, 216 (2008). We went on to underscore, however, the significance of the examination under oath. “[Bjecause of the importance of weeding out fraud ... we have recognized a limited exception to the prejudice requirement in those cases where there was a wilful and unexcused refusal of the insured to comply with an insurer’s timely request for an examination under oath.” Ibid.

The insured here did not simply commit a breach of its duty to cooperate by its persistent and unjustified refusal to turn over relevant documents, doing so only belatedly and when prompted by the lawsuit. We need not decide whether that breach, standing alone, which itself prejudiced the insurer, could be remedied by requiring the insured to recompense the insurer its costs and attorney’s fees, for that is not the situation before us. Instead, and in addition, the insured wilfully and without excuse refused to comply with the insurer’s timely and reasonable request for an examination under oath. That the insured may also have been heeding the unfortunate advice of counsel in so doing and that he belatedly disclosed financial records when this action was filed are not dispositive of the matter.

An insured’s wilful, unexcused refusal to comply with a reasonable request for an examination under oath, as here, constitutes a material breach of a condition precedent to the insurance contract and discharges the insurer’s obligations thereunder. The insurer need not show prejudice in such circumstances. Lorenzo-Martinez v. Safety Ins. Co., 58 Mass. App. Ct. at 363. Morales v. Pilgrim Ins. Co., 58 Mass. App. Ct. 722, 724 (2003). *337Boffoli v. Premier Ins. Co., 71 Mass. App. Ct. at 216. See 13 Couch, Insurance § 196:24 (3d ed. 2005) (citing Ellis v. Safety Ins. Co., 41 Mass. App. Ct. 630 [1996]). See also 1 Business Ins. L. & Prac. Guide § 5.05(2)(c)(i) (2006), citing Claflin v. Commonwealth Ins. Co., 110 U.S. 81 (1884) (failure to submit to examination under oath an “absolute defense” to suit on policy).5 Otherwise put, this insured’s intentional obstructionism in connection with the examination under oath thwarted the insurer’s legitimate efforts to investigate the claim expeditiously, consistent with its statutory obligation promptly to confirm or deny coverage. Under the applicable limited exception to the general rule, the insurer need show no further prejudice to be relieved of its obligation to provide coverage under the insurance policy.

*338For the aforesaid reasons, we affirm so much of the judgment as declares that the insured committed a violation and material breach of the provisions of the insurance contract that required it generally to cooperate, to appear and give meaningful testimony at an examination under oath, and to produce documents. We reverse so much of the judgment as declares the insurer contractually obliged to provide coverage to the insured.

Conclusion. Paragraphs one and two of the judgment are affirmed. The remainder of the judgment is vacated and is to be replaced with a declaration that the insurer is not contractually obligated to provide coverage to the insured.

So ordered.