Opinion by
Judge TURSI.Defendants, Seaward Construction Company, Inc. (Seaward), and William D. Guess, Seaward’s project manager, appeal a judgment entered against them and in favor of plaintiff, Richard Bradley, for compensatory and exemplary damages for his personal injuries incurred in a fight with Guess and other Seaward employees at a 1982 company-sponsored Christmas party. We affirm.
Plaintiff cross-appeals the trial court’s refusal to allow prejudgment interest on the punitive damages verdict. We agree with plaintiff’s position on the cross-appeal and therefore remand to the trial court for further proceedings.
I.
On their appeal, defendants’ primary contention is that this ease is essentially an action for assault and battery and is barred by the one-year statute of limitations set out in § 13-80-103, C.R.S. (1987 Repl.Vol. 6A). We agree that if this were such a case, it would be barred. However, the complaint pleads a claim for damages for negligent supervision, and thus, it was timely filed.
Further, contrary to defendants’ contention, there is ample competent evidence to support the jury’s finding that both defendants were negligent in their supervision of the party, and that this negligence was a cause of plaintiff’s injuries. See Kaiser Foundation Health Plan of Colorado v. Sharp, 741 P.2d 714 (Colo.1987); Moore v. Standard Paint & Glass Co., 145 Colo. 151, 358 P.2d 33 (1960). As stated in 1 CJI-Civ. 3d 9:28 (1989):
“A cause does not have to be the only cause or the last or nearest cause. It is sufficient if the act or failure to act joins in a natural and probable way with some other act or failure to act to cause some or all of the claimed injury.”
Also, there was sufficient evidence to support the finding that the conduct of the defendants in supervision was “wanton *751and reckless in disregard of plaintiffs rights and feelings” and the resultant award of punitive damages against both. See § 13-21-102, C.R.S. (then in effect); Jacobs v. Commonwealth Highland Theatres, Inc., 738 P.2d 6 (Colo.App.1986).
We see no merit in Seaward’s argument that it could not be held liable for negligent supervision because the party had ended before plaintiff was injured. The evidence is to the contrary.
Also, the court did not commit any reversible error in its ruling in prohibiting the admission of plaintiff’s prior altercations or a bankruptcy petition filed by him after the subject incident. Evidence of his previous involvement in fights had no probative value because of its remoteness in time and defendants’ failure to show plaintiff was the aggressor. The bankruptcy matter was irrelevant to the aggressor issue for which it was offered.
The affidavits offered in support of and against defendants’ claims of juror misconduct are ambiguous, contradictory, incomplete, and pertain to matters or statements that occurred during the jury’s deliberations. The exclusionary principle of CRE 606(b) is applicable here.
II.
In his cross-appeal, plaintiff contends that under the plain language of § 13-21-101(1), C.R.S. (1987 Repl Vol. 6A) he is entitled to interest from the date his action against defendants accrued. In Jacobs v. Commonwealth Highland Theatres, Inc., supra, this court, relying on Coale v. Dow Chemical Co., 701 P.2d 885 (Colo.App.1985), reversed an award of prejudgment interest on punitive damages awarded in a personal injury action. Plaintiff urges that the Jacobs’ court erred in its reliance on Coale v. Dow Chemical Co. because the latter case was not a personal injury ease and construction of § 13-21-101(1) was not in issue. See Mesa Sand & Gravel Co. v. Landfill, Inc., 776 P.2d 362 (Colo.1989). Plaintiff contends that since Jacobs failed to address the specific statute pertaining to interest in personal injuries claims, it is not dispositive and, in any case, should not be followed. We agree.
The right to interest is a creature of statute. Hendrie v. Board of County Commissioners, 153 Colo. 432, 387 P.2d 266 (1963). Section 13-21-101(1), C.R.S. (1987 Repl.Vol. 6A) provides in pertinent part:
“In all actions brought to recover damages for personal injuries sustained by any person resulting from or occasioned by the tort of any other person, corporation, association, or partnership, whether by negligence or by willful intent of such other person, corporation, association, or partnership and whether such injury has resulted fatally or otherwise, it is lawful for the plaintiff in the complaint to claim interest on the damages ... claimed from the date the action accrued....” (emphasis supplied)
If the language of a statute is plain and its meaning clear, it must be applied as written. Heagney v. Schneider, 677 P.2d 446 (Colo.App.1984). Here, plaintiff brought an action to recover damages— compensatory and exemplary — for personal injury sustained by him and resulting from a tort committed by the defendants with willful intent.
A claim for exemplary damages is inextricably tied to a plaintiff’s underlying claim for actual damages and, thus, is only one component of a single claim for relief. Harding Glass Co. v. Jones, 640 P.2d 1123 (Colo.1982). And, as held in Palmer v. A.H. Robins Co., 684 P.2d 187 (Colo.1984), although a claim for exemplary damages is punitive in character, it is not a separate and distinct cause of action, rather it is auxiliary to, and has no application absent, the underlying claim for actual damages.
Section 13-21-102, C.R.S. (originally enacted Colo.Sess.Laws 1889, p. 296, § 1; as amended July 1, 1986, codified at § 13-21-102(l)(a), C.R.S. (1987 Repl.Vol. 6A)) permits, as here, an award of exemplary damages upon a finding of injury to the person attended by a “wanton and reckless disregard of the injured party’s rights and feelings.” The term “wanton,” in this con*752text, means nothing more than "willful and intentional.” See Clark v. Small, 80 Colo. 227, 250 P. 385 (1926).
In its amendments to the exemplary damages statute, Colo.Sess.Laws 1986, ch. 106, § 13-21-102 at 675, the General Assembly, consistent with the holding of Clark v. Small, specifically incorporated the word and concept of willful in the predicate conduct upon which exemplary damages therefor may be awarded. Furthermore, the defendants do not present, and we are unaware of, any logical reason for distinguishing the mental state necessary for a finding of “wanton” conduct from that conduct needed for a determination of “willful” intent.
Since, if possible, statutes must be harmonized, Ragsdale Bros. Roofing, Inc. v. United Bank, 744 P.2d 750 (Colo.App. 1987), we conclude that when the “willful” intent provision of § 13-21-101(1) is established by a finding of “wanton” conduct it is applicable to “personal injury” claims, and such finding mandates that interest also be added to the exemplary damage award. Further, such interest must be assessed from the day the action accrues. Accord Greenfield v. Spectrum Investment Corp., 174 Cal.App.3d 111, 219 Cal.Rptr. 805 (1985) (allowing prejudgment interest on award of exemplary damages under a similarly worded statute). Cf. Casto v. Arkansas-Louisiana Gas Co., 562 F.2d 622 (10th Cir.1977) (disallowing interest on punitive damages where statute did not contain any reference to willful intent).
The holding reached in Jacobs, was based on the case of Coale v. Dow Chemical Co., supra. Coale disallowed prejudgment interest on exemplary damages under § 5-12-102, C.R.S. (1988 Cum.Supp.). Coa-le, however, concerned a commercial property damage matter and not a personal injury claim. Inasmuch as prejudgment interest in personal injury actions is governed by § 13-21-101 and not § 5-12-102, we consider both Jacobs and Coale to be unpersuasive in this instance.
Here, it is indisputable that plaintiffs claims for both compensatory and exemplary damages are part and parcel of an action to recover damages for personal injuries sustained by him because of a tort and caused by conduct commensurate with willful intent by the defendants. See Harding Glass v. Jones, supra; Palmer v. A.H. Robins Co., supra. We are unpersuaded that the punitive purposes of awarding exemplary damages against willful inflicters of personal injuries on others should be diminished by forebearing the assessment of interest on exemplary damages from the day the perpetrator inflicts injury until the day judgment is finally rendered.
Accordingly, the judgment awarding plaintiff compensatory and punitive damages is affirmed, and the cause is remanded with directions to add interest to plaintiffs judgment for exemplary damages, pursuant to § 13-21-101, from the date the action accrued to date of judgment.
DUBOFSKY, J., concurs. VAN CISE,* J., concurs in part and dissents in part.