
379 Mich. 280 (1967)
150 N.W.2d 788
BIELSKI
v.
WOLVERINE INSURANCE COMPANY.
Calendar No. 12, Docket No. 51,446.
Supreme Court of Michigan.
Decided June 6, 1967.
van Benschoten & van Benschoten (Duane S. van Benschoten, of counsel), for plaintiff.
Stanton & Davidson (John Davidson, of counsel), for defendant.
DETHMERS, C.J.
This is defendant's appeal, on leave granted, from Court of Appeals reversal[*] of *283 a summary judgment entered on the pleadings in circuit court in defendant's favor in plaintiff's suit on the uninsured motorist provisions of an automobile insurance policy issued by defendant to plaintiff.
Defendant's motion for summary judgment was filed December 19, 1963. It was governed by GCR 1963, 117, which permits such motion to be based, as it was here, on the ground that plaintiff's complaint failed to state a claim upon which relief can be granted. For the purpose of that motion, both at the trial and appellate levels, every well-pleaded allegation in the complaint is assumed to be true. Hiers v. Detroit Superintendent of Schools, 376 Mich 225. So considered, we find the following to be facts pleaded by plaintiff:
Plaintiff was injured on June 24, 1960, in an automobile collision between his automobile and an uninsured automobile which was then and there being operated negligently by the owner.
The policy issued by defendant to plaintiff contained, inter alia, a promise to pay in these terms:
"1. Damages for Bodily Injury Caused by Uninsured Automobiles.
"To pay all sums which the insured or his legal representative shall be legally entitled to recover as damages from the owner or operator of an uninsured automobile because of bodily injury, sickness or disease, including death resulting therefrom, * * * sustained by the insured, * * * and arising out of the * * * use of such uninsured automobile, provided, for the purposes of this indorsement, determination as to whether the insured or such representative is legally entitled to recover such damages, and if so the amount thereof, shall be made by agreement between the insured or such representative and the company or, if they fail to agree, by arbitration."
*284 It was also provided that:
"6. Arbitration. If any person making claim hereunder and the company do not agree that such person is legally entitled to recover damages from the owner or operator of an uninsured automobile, * * * then, upon written demand of either, the matter or matters upon which such person and the company do not agree shall be settled by arbitration in accordance with the rules of the American Arbitration Association. * * * Such person and the company each agree to consider itself bound and to be bound by any award made by the arbitrators pursuant to this indorsement. Such an award shall be a condition precedent to any action against the company."
and
"EXCLUSIONS.
"This indorsement does not apply: (a) to bodily injury to an insured, * * * with respect to which such insured, * * * shall, without written consent of the company, make any settlement with or prosecute to judgment any action against any person * * * who may be legally liable therefor."
In plaintiff's complaint it is further alleged that on June 24, 1960, date of the accident, plaintiff went to defendant and demanded payment of the amount to which he would be entitled under the policy; that defendant refused to pay; that plaintiff then, on that day, demanded that defendant arbitrate pursuant to the arbitration provisions of the policy and defendant refused, contending that there was no liability to plaintiff on the part of the uninsured motorist and, hence, none on defendant's part; that thereafter plaintiff did on numerous occasions demand that the matter be submitted to arbitration and defendant continually refused to enter into arbitration or to take any steps for arbitration or to cooperate with plaintiff so that arbitration could be had; that in February of 1961 *285 plaintiff retained counsel and commenced suit against the uninsured motorist and immediately notified defendant thereof; that defendant advised plaintiff that it would take no part in said lawsuit; that plaintiff's attorney thereafter, on July 10, 1961, wrote a letter to defendant offering to arbitrate pursuant to terms of the policy; that defendant refused to take steps to arbitrate as requested or demanded by plaintiff; that on July 28, 1961, plaintiff's attorney again wrote defendant demanding that it do something about arbitrating plaintiff's cause and that it forthwith arbitrate the matter, but defendant did not do so; that on September 11, 1961, plaintiff's attorney wrote defendant stating that he had often written defendant seeking arbitration but that defendant had done nothing about it, so that plaintiff's attorney could only conclude defendant was refusing to arbitrate and that, therefore, he would now proceed with the pending lawsuit against the uninsured motorist, and he sent a copy of the summons and requested defendant to enter an appearance for the uninsured motorist and the letter stated in conclusion that plaintiff would not now arbitrate because defendant had, for so long, in effect, refused to arbitrate; that defendant thereafter refused to defend the uninsured motorist or to enter an appearance for him in the lawsuit; that on October 2, 1961, defendant demanded arbitration; that on October 8, 1962, plaintiff took a default judgment in the case against the uninsured motorist for $10,000; that on November 9, 1962, plaintiff served on defendant a copy of said judgment and demanded payment thereof by it; that on April 22, 1963, plaintiff commenced the instant action against defendant to enforce such payment.
These allegations of facts touching on refusal of defendant to arbitrate are disputed by defendant.
*286 Defendant's defense is that plaintiff breached the arbitration requirements of the policy which provided that arbitration should be a condition precedent to any action by plaintiff against defendant on the provision here in question, and that under the exclusion (a) clause of the policy plaintiff had absolved defendant from liability by prosecuting the suit against the uninsured motorist to judgment without defendant's written consent. In response, plaintiff contends, as pleaded in his complaint, that defendant waived the compulsory arbitration provision of the policy by failure to act on it within a reasonable time and, further, that by its failure to act on plaintiff's demands for arbitration defendant became estopped from asserting the defense of the arbitration provisions of the policy and its exclusion (a) clause.
Defendant may waive the compulsory arbitration provision of its insurance policy by its conduct.
"A clause in an insurance policy providing for arbitration or appraisal of the loss or damage as a condition precedent to a suit by the policyholder to recover insurance is inserted wholly for the protection of the insurer and may be waived by it. Such waivers need not be expressed in terms, but may be implied by the acts, omissions, or conduct of the insurer or its agents authorized in such respect." 29A Am Jur, Insurance, § 1617, p 703.
In Shapiro v. Patrons' Mutual Fire Insurance Company of Michigan, 219 Mich 581, the insurance policy there involved also contained an arbitration provision. This Court held the insured entitled to bring an action against the insurer without compliance with the arbitration requirement because the insurer had caused delay of an arbitration award for more than 6 months, which delay this Court termed unreasonable, unwarranted and oppressive to the insured. This Court said (p 588):
*287 "Under the circumstances the plaintiff was warranted in abandoning the arbitration proceedings and bringing this action."
Whether defendant refused arbitration or unreasonably delayed it presents a question of fact on this record. If the jury should find the facts in that respect to be as alleged in plaintiff's complaint, it cannot then be said that, as a matter of law, that did not constitute a waiver by defendant of the arbitration requirements and the exclusion (a) clause of the policy. Defendant says there can be no effectual waiver of a stipulation in an agreement unless made intentionally, with knowledge of the circumstances, citing 12 Am Jur, Contracts, § 354. Defendant says this did not occur here. On the pleadings, this, too, presents a question of fact for the jury. Defendant urges that there cannot be said to have been a waiver of arbitration by it because plaintiff had the right to go to arbitration without the let or hindrance of defendant. This is no answer to the fact that defendant could, by its conduct, waive its rights to arbitration regardless of what plaintiff did or failed to do.
Defendant demanded arbitration after plaintiff's attorney informed it that plaintiff was no longer willing to arbitrate and was going to go ahead with his suit against the uninsured motorist. If defendant's conduct had already worked a waiver of its rights to arbitration, its subsequent demand could not revive them.
"The insurer, once having waived the right to demand arbitration of the loss under the terms of the policy, cannot require that the matter in dispute be submitted to arbitrators." 29A Am Jur, Insurance, § 1617, p 704.
While the shoe was on the other foot in Schwier v. Atlas Insurance Co., 227 Mich 104, where plaintiff-assured *288 refused to arbitrate and commenced suit to which the insurer pleaded said refusal as a defense and plaintiff subsequently offered to arbitrate, we think that the holding in that case that defendant's refusal of that offer did not operate as a waiver by defendant of its pleaded defense, means, as applied here, that defendant's waiver, if any, by refusal to arbitrate before plaintiff pressed its suit, would be final and not altered by its subsequent demand for arbitration.
If it be urged that waiver by defendant of the arbitration requirements would avail plaintiff nothing with respect to the policy's exclusion (a) clause, we would say that the two are corollary, the exclusion clause serving to lend greater force to the arbitration requirements, and that with the latter waived, if it was, the purpose of the former disappears and it no longer stands as a bar to plaintiff's action against defendant.
We think the plaintiff's complaint contains allegations giving rise to an issue of facts as to whether defendant did waive its rights to arbitration and to preventing suit against the uninsured until defendant should give plaintiff written consent therefor. Accordingly, the holding of the Court of Appeals, setting aside the summary judgment, should be affirmed and the case remanded to circuit court for trial on the issues of waivers as pleaded. Costs to plaintiff.
KELLY, SOURIS, O'HARA, and ADAMS, JJ., concurred with DETHMERS, C.J.
T.M. KAVANAGH, J., did not sit.
BLACK, J., concurred in the result.
BRENNAN, J., took no part in the decision of this case.
NOTES
[*]  2 Mich App 501, 377 Mich 711.
