OPINION
delivered the opinion of the court
Pursuant to Rule 23 of the Supreme Court of Tennessee, 1 this Court accepted certification of the following two questions from the United States District Court for the Eastern District of Tennessee, at Greeneville:
(1) In an action instituted against an employer for workers’ compensation benefits and in which the employer files an answer or amended answer naming a third party as having caused all or a part of the plаintiffs injuries, does Tennessee Code Annotated section 20-1-119 extend the limitation period and allow the filing of an amended complaint against the third party named by the employer and/or other persons named as tortfeasors(s) by the third party in its answer?
In the event the first question is answered in the affirmative, then the second question is posed:
(2) In Tennessee Code Annotated section 20-l-119(а), does the term “applicable statute of limitations” appearing in the phrase “or named in an amended complaint filed within the applicable statute of limitations” refer to the one year limitation period for personal injury only or to the limitation period as extended by the ninety-day “window” provided by Tennessee Code Annotated section 20-l-119(a)?
As to the first question, we answer in the negative. We hold that because Tennessee Code Annotated section 20-1-119 applies only to cases in which comparative fault is or becomes an issue, and because workers’ compensation benefits are awarded without regard to fault, section 20-1-119 may not be invoked as authority to amend a complaint in a workers’ compensatiоn action to include a claim against a third party tortfeasor that would otherwise be time-barred. Because our answer to this first question renders the second question moot, we do not address it at this time.
Factual and Procedural Background
This matter arises from an action for workers’ compensation benefits. The plaintiff, Carolyn Curtis, an employee of TRW, Inc. (“TRW”) in Rogersville, Tennessee, tripped and fell while walking across the TRW parking lot on February 27, 2002. Curtis apparently tripped over a metal spike or rod that had been left lying on the lot. Just short of a year later, on February 11, 2003, Curtis filed a complaint in Hawkins County Circuit Court seeking workers’ compensation benefits for the in *880 juries she sustained from the fall. TRW filed an answer to the complaint on April 22, 2003, and then filed an amended answer on June 13, 2003, in which it alleged for thе first time that a third party, G.E. Capital Modular Space (“G.E.”), had created the hazard on TRW’s property causing Curtis’s fall and injuries. 2
On July 8, 2003, twenty-five days after TRW filed its amended answer and more than one year after Curtis sustained her injury, Curtis filed an amended complaint alleging negligence on the part of G.E. in leaving the spike or rod on TRW’s parking lot. G.E. thereafter filed a motion to dismiss on the grounds that the action against it was time-barred by the applicable statute of limitations. However, in response, Curtis cited to Tennessee Code Annotated section 20-1-119 (1994) as authority allowing for such an amendment. According to Curtis, section 20-1-119 provided a ninety-day period following the filing of TRW’s answer during which Curtis could amend her original complaint to add parties alleged by TRW to have been responsible for her injury. G.E.’s motion to dismiss was subsequently denied, and on September 30, 2003, G.E. filed an answer alleging that another party, Bennett Truck Transport, Inc. (“Bennett”), was solely responsible for the delivery, placement and removal of the object on TRW’s lot which had caused Curtis’s fall. Therefore, G.E. asserted in its answer that Bennett was responsible for Curtis’s injuries.
Curtis then filed a second amended complaint on October 22, 2003, in which she alleged liability against Bennett for negligently failing to remove the spike or rod from the parking lot. Bennett, in turn, responded by filing a motion to dismiss, arguing that the claim was barred by the statute of limitations. Curtis again argued that amending the complaint to add Bennett as a defendant was appropriate under section 20-1-119. Meanwhile,. the claim for workers’ compensation benefits against TRW was settled, leaving only the claims against G.E. and Bennett to be resolved. At this point, based upon federal diversity jurisdiction, G.E. and Bennett had the case removed from Hawkins County Circuit Court to United States District Court for the Eastern District of Tennessee. With the case now before the United States District Court, both G.E. and Bennett have renewed their argument that the claims against them are time-barred. In response, Curtis again cites to Tennessee Code Annotated section 20-1-119 as providing a ninety-day “window” following the filing of the defendants’ amended answers during which a complaint may be properly amended to include additional claims against third parties, notwithstanding any statutory time limitations to the contrary. To resolve this issue, the United States District Court, upon a joint motion by Curtis and Bеnnett and pursuant to Tennessee Supreme Court Rule 23, certified to this Court the questions discussed herein concerning the application of Tennessee Code Annotated section 20-1-119 (1994).
ANALYSIS
I. First Certified Question
Tennessee Code Annotated section 20-1-119
In 1992, Tennessee adopted a system of comparative fault to be utilized
*881
in tort litigation.
See McIntyre v. Balentine,
(a)In civil actions where comparative fault is or becomes an issue, if a dеfendant named in an original complaint initiating a suit filed within the applicable statute of limitations, or named in an amended complaint filed within the applicable statute of limitations, alleges in an answer or amended answer to the original or amended complaint that a person not a party to the suit caused or contributed to the injury or damage for which the plaintiff seeks recovery, and if the plaintiffs cause or causes of action against such person would be barred by any applicable statute of limitations but for the operation of this section, the plaintiff may, within ninety (90) days of the filing of the first answer or first amended answer alleging such person’s fault, either:
(1) Amend the complaint to add such person as a defendant pursuant to Rule 15 of the Tennessee Rules of Civil Procedure and cause process to be issued for that person; or
(2) Institute a separate action against that person by filing a summons and complaint. If the plaintiff elects to proceed under this section by filing a separate action, the complaint so filed shall not be considered an “original complaint initiating the suit” or “an amеnded complaint” for purposes of this subsection.
(b) A cause of action brought within ninety (90) days pursuant to subsection (a) shall not be barred by any statute of limitations. This section shall not extend any applicable statute of repose, nor shall this section permit the plaintiff to maintain an action against a person when such an action is barred by an applicable statutе of repose.
(c) This section shall neither shorten nor lengthen the applicable statute of limitations for any cause of action, other than as provided in subsection (a).
Tenn.Code Ann. § 20-1-119 (1994) (emphasis added).
Interpretation and Application of Section 20-1-119
With these provisions of section 20-1-119 in mind, the first question certified to this Court requires us to determine whether this statute provides any authority under which a complaint seeking workers’ compensation benefits may bе amended in order to add potential third party tortfeasors. In construing statutes, we first look to the language of the statute itself, keeping in mind that the proper role of the Court is “to ascertain and give effect to the legislative intent without unduly restricting or expanding a statute’s coverage beyond its intended scope.”
Owens v. State,
By its plain terms, Tennessee Code Annotated section 20-1-119 applies only to civil cases in which “comparative fault is or becomes an issue.” This necessarily leads us to inquire whether comparative fault is, or can ever become, an issue in a workers’ compensation action.
Workers’ Compensation Claims and Comparative Fault
The right to workers’ compensation benefits is a unique concept in the law, derived solely from statutory provisions rather than from the common law.
See
99 C.J.S.
Workers’ Compensation
§ 23 (2004). The primary purрose of workers’ compensation is to afford benefits for job-related injuries regardless of fault.
Woods v. Harry B. Woods Plumbing Co.,
In
Ridings,
an employee sustained on-the-job injuries when he fell from a ladder.
The basic premise of the holdings in both
Ridings
and
Snyder
was that a defendant in a tort action could not allege, as an affirmative defense, comparative fault on the part of a nonparty who was immune from tort liability. However, we should note at this juncture that this reasoning was later abrogated in large part by
Carroll v. Whitney,
Looking to the Tennessee Workers’ Compensation Law, see Tenn.Code Ann. §§ 50-6-101 to -705 (1999), we find further support for the proposition that fault plays no part in assigning liability for workers’ compensation benefits. For instance, Tennessee Code Annotated section 50-6-103(a) (1999) provides that “[e]very employer and employee subject to the Workers’ Compensation Law shall, respectively, pay and accept compensation for рersonal injury or death by accident arising out of and in the course of employment without regard to fault as a cause of the injury or death.” (emphasis added). Also, Tennessee Code Annotated section 50-6-111 (1999) specifically bars an employer from asserting negligence on the part of an employee as a defense to a workers’ compensation claim. Furthermore, Tennessеe Code Annotated section 50-6-112(a) (1999) states:
When the injury or death for which compensation is payable under the Workers’ Compensation Law was caused under circumstances creating a legal liability against some person other than the employer to pay damages, the injured worker, or such injured worker’s dependents, shall have the right to take compensatiоn under such law, and such injured worker, or those to whom such injured worker’s right of action survives at law, may pursue such injured worker’s or their remedy by proper action in a court of competent jurisdiction against such other person, (emphasis added).
We wish to emphasize that, as the foregoing statutory provision makes clear, an injured employee who is awarded workers’ compensation bеnefits does not relinquish his or her right to also pursue tort claims against third parties. In fact, an employee may seek workers’ compensation benefits and simultaneously file suit against a third party tortfeasor. If the employee succeeds in an action against a third party, the employer is then entitled to a subrogation lien against the employee’s recovery.
See
Tenn.Code Ann. § 50-6-112(e) (1999);
Carroll,
As previously noted, the workers’ compensation system is purely a creature of statutory construct, with the rights and responsibilities of the parties being derived solely from the statutes themselves.
See, e.g., Liberty Mut. Ins. Co. v. Stevenson,
II. Second Certified Question
Our answer to the first certified question effectively resolves the issues presently before the certifying court, therefore, we need not address the second question at this time.
CONCLUSION
For the reasons set forth above, the first question certified to this Court is answered in the negative. We hold that in an action instituted against an employer for workers’ compensation benefits and in which the employer files an answer or amended answer naming a third party as having caused all or a part of the plaintiffs injuries, Tennessee Code Annotated section 20-1-119 is inapplicable and does not extend the limitation period to allow for the filing of an amended complaint against the third party named by the employer and/or other persons named as tortfeasors by the third party in its answer.
The clerk shall transmit this opinion in accordance with Tennessee Supreme Court Rule 23, section 8. Costs in this Court are taxed to the plaintiffirespondent, Carolyn Curtis.
Notes
. "The Supreme Court may, at its discretion, answer questions of law certified to it by the Supreme Court of the United States, a Court of Appeals of the United States, a District Court of the United States in Tennessee, or a United States Bankruptcy Court in Tennessee. This rule may be invoked when the certifying court determines that, in a proceeding before it, there are questions of law of this state which will be determinative of the cause and as to which it appears to the certifying court there is no controlling precedent in the decisions of the Supreme Court of Tennessee.” Tenn. Sup.Ct. R. 23, § 1.
. Though not relevant to the issues presently before us, we know of no authority which would allow the defendant employer, TRW, to assert third party fault as an affirmative defense in a workers’ compensation action. As will be discussed infra, fault is not an issue in a workers’ compensation action, and third party fault cannot be asserted to off-set an employer’s workers’ сompensation liability. Consequently, it appears that the circuit court improvidently granted permission allowing TRW to amend its original answer in this respect.
. The employer’s subrogation interest is further protected by Tennessee Code Annotated section 50-6-112(d)(2) (1999) which provides that if an injured worker fails to bring an action against the third party tortfeasor within one year, the worker’s cause of action is assigned to the employer and workers’ compensation carrier who then have six months to commence the action.
See also Craig v. R.R. St. & Co.,
