A machine can complete the same task hundreds of times before a defective component causes a serious injury. But when that happens in California, the injured employee may face an immediate question: Is the case limited to workers’ compensation or can someone also be sued in civil court?
Defective workplace equipment can turn a routine shift into a serious medical and financial crisis. According to the U.S. Bureau of Labor Statistics, California private employers reported 344,500 nonfatal workplace injuries and illnesses in 2024. The state also recorded 419 fatal occupational injuries during the same year.
When faulty equipment contributes to an injury, responsibility may extend beyond the employer. For this, an employee may need guidance from a Sacramento injury law firm to determine whether the case involves workers’ compensation, a third-party lawsuit or both. Mostly, the outcome depends on who manufactured the equipment, who maintained it and what caused the failure.
How California Workers’ Compensation Applies
Workers’ compensation is usually the starting point after an employee is injured while performing job duties. California’s system generally provides benefits without requiring the employee to prove that the employer acted negligently.
Available benefits may include:
- Medical treatment related to the injury
- Temporary disability payments during recovery
- Permanent disability benefits for lasting impairment
- Supplemental job displacement benefits in qualifying cases
For example, a warehouse employee may suffer a hand injury when a packaging machine cycles unexpectedly. The employee can usually seek workers’ compensation while investigators determine why the machine malfunctioned.
The Exclusive Remedy Rule
California Labor Code section 3602 generally makes workers’ compensation the employee’s exclusive remedy against an insured employer. This means the employee normally cannot file an ordinary personal injury lawsuit against the employer. Unfortunately for the employee, the rule applies even when poor maintenance or inadequate workplace supervision contributed to the incident.
However, California law recognizes several narrow exceptions.
Labor Code section 4558 may permit a lawsuit when an employer knowingly removes a manufacturer-installed guard from certain power presses. It may also apply when the employer knowingly fails to install a guard required by the manufacturer.
An employee may receive increased workers’ compensation benefits when serious and willful employer misconduct caused the injury. A direct civil claim may also be available when the employer failed to carry legally required workers’ compensation insurance.
Employees should note that these exceptions are technical. Ordinary carelessness does not usually allow an employee to bypass the workers’ compensation system.
When a Third Party May Be Responsible
Workers’ compensation exclusivity generally protects the employer. It does not automatically protect an equipment manufacturer, rental company or outside repair contractor.
California Labor Code section 3852 allows an employee to pursue a claim against a third party whose conduct contributed to the workplace injury.
Manufacturing Defects
A manufacturing defect exists when a particular machine differs from its intended design. The defect may involve a weak component or another production error that makes the equipment unsafe.
For example, a metal support may fracture during normal use because it was improperly welded. If the faulty weld caused the employee’s injury, the manufacturer may face product liability.
Design Defects
A design defect may exist when every unit was manufactured as intended, but the design creates an unreasonable danger. The problem is therefore present throughout the product line rather than in one defective unit.
For instance, a cutting machine may be unsafe if it can activate while a worker’s hand remains near the blade. For this, the case may focus on whether a practically safer design was available when the machine was produced.
Inadequate Warnings
Manufacturers must provide suitable warnings about hazards that may not be obvious to users. Liability may arise when missing or unclear instructions contribute to an injury.
A warning claim requires a connection between the inadequate warning and the accident. The absence of a label alone does not automatically establish liability.
Other third parties may also be responsible. For example, a rental company could face a claim after supplying a forklift with faulty brakes. Additionally, a maintenance contractor may be liable after incorrectly repairing a safety control.
A third-party lawsuit may provide compensation that workers’ compensation does not fully cover, including damages for pain and reduced future earning ability.
Why Evidence and Safety Records Matter
Identifying a potentially responsible party is only the first step. The claim must also be supported by evidence showing how the equipment failed and how that failure caused the injury.
You see, employers may repair the machine to promptly resume production, while damaged components may be discarded during cleanup. Once the equipment is altered, determining what exactly caused the accident becomes more difficult.
Important evidence may include:
- The machine in its post-accident condition
- Photographs of the controls and safety guards
- The equipment’s serial number and model information
- Maintenance and repair records
- Earlier employee complaints
- Workplace training materials
- Inspection reports and safety citations
An engineer may then determine whether the failure originated in the product’s design, manufacturing process or later servicing.
To deal with this, it is important to have a written preservation notice that can request that the equipment remain unchanged until qualified experts inspect it. An engineer may then determine where the
Recent California Enforcement
Recent California enforcement shows why these records matter. In February 2026, Cal/OSHA proposed penalties totaling $212,850 against a San Jose sheet metal company after an employee’s finger was amputated in a press brake accident. Investigators reported that the machine lacked a required safety guard.
Cal/OSHA also stated that another employee at the facility suffered a similar amputation in June 2024. Although a prior incident does not automatically establish civil liability, repeated accidents, earlier complaints and inspection findings may help show that a dangerous condition was known and that additional safeguards could have prevented the injury.
Moving Forward After a Workplace Equipment Injury
The most important thing an employee should do after an accident occurs is to report as soon as possible. According to California law, someone should serve a written notice to the employer within 30 days. Also, the employer must provide a DWC-1 claim form within one working day after learning that the injury caused necessitated treatment beyond first aid.
California Code of Civil Procedure section 335.1 generally provides two years to file a personal injury lawsuit. This deadline may apply to claims against equipment manufacturers or other private third parties.
A much shorter period may apply when a public entity owns or maintains the equipment. For this, any claim must provide a formal notice within six months.
After a defective equipment injury, understanding what caused the accident and preserving key evidence can help clarify who is responsible. California workers may have access to workers’ compensation while also pursuing a third-party claim where appropriate. Knowing these options allows injured employees to make informed decisions about the next steps in their recovery and legal process.
