Guide · Work Injury · Illinois

Workers’ Comp and the Third-Party Claim: Two Systems, One Injury

A serious injury at work can involve two cases at once. Handling one without the other can cost you, and the link between them is a lien that surprises many people.

By Lincoln Square Law · 8-minute read

Most work injuries are handled entirely through workers’ compensation, and that system is designed to be simpler than a lawsuit: benefits are paid without anyone having to prove fault. But when someone other than the employer caused or contributed to the injury, the injured worker may have a second claim, a civil lawsuit against that third party. The two cases run under different rules, pay different kinds of damages, and are connected by a lien that many people never hear about until settlement. Handling one without the other in mind can cost real money.

What workers’ compensation provides, and what it does not

The Illinois Workers’ Compensation Act is a no-fault system. An employee injured in an accident arising out of and in the course of employment is entitled to benefits without proving that the employer was negligent. Those benefits include reasonable and necessary medical care (820 ILCS 305/8(a)), temporary total disability payments while the worker cannot work, generally two-thirds of the average weekly wage within statutory minimums and maximums (820 ILCS 305/8(b)), and compensation for permanent disability.

The trade-off is that workers’ compensation is the exclusive remedy against the employer. With narrow exceptions, an employee cannot sue the employer in court for the injury (820 ILCS 305/5(a)). And the benefits do not include pain and suffering, loss of a normal life, or full lost earnings. For a serious injury, the gap between what comp pays and the full harm can be large.

When there is a third party

The exclusive remedy protects the employer, not everyone else. If a person or company other than the employer caused the injury, the worker can bring an ordinary civil claim against that party and seek full damages. Common examples include:

• A driver who crashes into a delivery or service vehicle while the employee is working.
• The manufacturer or seller of a defective machine, tool, ladder, or safety device.
• A general contractor or another subcontractor on a construction site who controlled the work or created the hazard.
• The owner or manager of property where the employee was working, when a dangerous condition caused the injury.

The third-party case is a negligence or product liability case like any other. The worker must prove fault, and Illinois’ comparative fault rules apply: a plaintiff more than 50 percent at fault recovers nothing, and damages are otherwise reduced by the plaintiff’s share (735 ILCS 5/2-1116). In return, the recovery can include the categories comp does not pay, including pain and suffering and full economic loss.

Who is not a third party

The exclusive remedy is broader than the employer alone. Section 5(a) also protects the employer’s insurer and the agents and employees of the employer, so a co-worker whose carelessness caused the injury generally cannot be sued (820 ILCS 305/5(a)). Staffing arrangements add another wrinkle: when a worker is placed by a staffing agency, both the agency and the company directing the work may be treated as employers for this purpose. Sorting out who counts as the employer, and who is a true third party, is one of the first questions to answer, because it determines whether a second claim exists at all.

The employer’s lien

The two cases are linked by section 5(b) of the Act. When an injured worker recovers from a third party, the employer that paid comp benefits is entitled to be reimbursed from that recovery for the compensation it paid, which prevents the worker from being paid twice for the same loss (820 ILCS 305/5(b)). The same section requires the employer to share the cost of obtaining the recovery: the employer’s reimbursement is reduced by 25 percent of the gross amount of the reimbursement, as its share of attorney’s fees, and by its pro rata share of the costs.

The lien can also affect future benefits. Amounts the worker recovers from the third party beyond the lien may be treated as a credit against future comp benefits the employer would otherwise owe. That interaction is one of the main reasons the two cases have to be negotiated together. A third-party settlement that looks generous can shrink significantly once the lien and future credit are applied, and a lien that is not addressed before settlement can hold up the money.

The contribution cap

A third-party defendant who is sued by the worker will often try to bring the employer back into the case, arguing that the employer’s own negligence contributed to the injury. Illinois allows that contribution claim, but the Illinois Supreme Court capped the employer’s contribution liability at the amount of its workers’ compensation liability (Kotecki v. Cyclops Welding Corp., 146 Ill. 2d 155 (1991)). In practice, employers often waive their lien in exchange for being released from contribution exposure. Whether that trade makes sense depends on the numbers, and it is one of the key negotiating points in a combined case.

Two sets of deadlines

The comp case and the third-party case run on different clocks. In the comp case, the employee must give the employer notice of the accident as soon as practicable, and not later than 45 days after it (820 ILCS 305/6(c)). An application for adjustment of claim with the Illinois Workers’ Compensation Commission generally must be filed within three years after the accident, or within two years after the last payment of compensation, whichever is later (820 ILCS 305/6(d)).

The third-party lawsuit follows the civil limitations period, generally two years from the injury for personal injury claims (735 ILCS 5/13-202), with different rules for some defendants, such as local public entities (745 ILCS 10/8-101(a)), and statutes of repose that can limit product liability and construction claims. Missing either set of deadlines does not extend the other. A worker who is receiving comp checks can easily let the two-year civil deadline pass without realizing a second claim existed.

Attorney’s fees in each system

Fees work differently in each case. In the comp case, fees are regulated by the Act and are generally limited to 20 percent of the compensation recovered, with limited exceptions approved by the Commission (820 ILCS 305/16a). In the third-party case, fees are set by the engagement agreement, usually on a contingency basis, and the employer’s 25 percent contribution to fees under section 5(b) comes out of the lien reimbursement rather than the worker’s share. A clear written explanation of how fees apply in both cases should be part of the engagement.

Evidence to preserve

Third-party claims are often won on evidence that the employer, a contractor, or a manufacturer controls. The equipment involved should be preserved and not repaired, altered, or discarded before it can be inspected. Incident reports, safety meeting records, contracts between the companies on the site, maintenance logs, training records, and photographs of the scene all matter. Witnesses on a job site change jobs quickly. A prompt preservation request, and a clear record of who controlled the work, are often the difference between a viable third-party case and a comp-only recovery.

Coordinating the two cases

The practical goal is to maximize what the worker actually keeps. That means identifying every potential third party early, keeping the comp claim moving so medical care and wage benefits continue, calculating the lien and future credit before any settlement is discussed, and negotiating the lien alongside the third-party claim rather than after it. It also means making sure that nothing said or signed in one case undermines the other, such as a recorded statement in the comp claim that the third party later uses on the question of fault.

If you were hurt at work and another company, driver, or product was involved, ask about the third-party claim at the start. The comp system will usually move forward on its own. The second claim, and the money it can add, depends on someone noticing it in time.