Workers' compensation provides benefits regardless of fault, but it limits the types of damages you can recover (no pain and suffering). When a third party — someone other than your employer or co-worker — causes your workplace injury, you may pursue both workers' comp benefits and a personal injury lawsuit against the third party.
Motor vehicle accidents: If you're injured in a car accident while working (delivery driver, traveling for business), you can file a workers' comp claim and a personal injury suit against the at-fault driver.
Defective equipment: If workplace machinery or equipment was defective, you may have a product liability claim against the manufacturer.
Premises liability: If you're injured at a client's property or worksite controlled by another company, the property owner may be liable.
Toxic exposure: If exposed to harmful substances manufactured by a third party, you may have a toxic tort claim.
Workers' comp benefits begin immediately and don't require proving fault. The third-party claim takes longer but can include pain and suffering, full lost wages (not just the 66% workers' comp rate), and other damages not available through workers' comp.
Subrogation: Your workers' comp insurer has a "subrogation lien" — they're entitled to be repaid from your third-party recovery for benefits they've already paid. An experienced attorney can often negotiate to reduce this lien.
The deadline for filing a third-party personal injury claim (typically 2-3 years) is separate from your workers' comp claim. Missing either deadline means losing that avenue of recovery.