What Is a Cumulative Injury (CT) in a California Workers’ Compensation Case?

A cumulative injury, also referred to as a CT injury in California workers’ compensation cases, occurs when repetitive work activities over time lead to a physical or mental condition. Unlike a specific injury that results from a single event, a cumulative injury builds gradually and may not be noticed right away.

These injuries are common in jobs that involve repeated motions, prolonged strain, or long-term exposure to harmful conditions.

Examples of Cumulative Injuries

Some common examples of cumulative trauma include:

• Carpal tunnel syndrome from repeated typing or assembly line work
• Back pain from years of heavy lifting
• Hearing loss from long-term exposure to loud machinery
• Shoulder injuries from overhead repetitive tasks
• Stress-related conditions due to ongoing emotional strain

These injuries often go untreated in the early stages because workers may not realize their job duties are causing harm.

When Does a Cumulative Injury Count as Work-Related?

For a cumulative injury to qualify for workers’ compensation benefits, the condition must be caused, at least in part, by work duties. Medical evidence is usually needed to establish the link between the injury and the workplace.

The date of injury for cumulative trauma is typically the date the worker first knew, or should have known, that the condition was caused by work. This date is important because it determines deadlines for reporting the injury and filing a claim.

Reporting and Filing a Claim for a CT Injury

Cumulative injuries must be reported to the employer as soon as the worker becomes aware of the work connection. Delays can result in denial of the claim.

After reporting the injury, the worker should file a DWC-1 claim form and seek medical evaluation. Because CT injuries are often challenged by insurance carriers, medical documentation and timelines are critical.

Challenges With Cumulative Injury Claims

Cumulative injury claims are often denied or disputed for several reasons:

• The injury is blamed on aging or activities outside of work
• The worker has a history of similar health issues
• There is a lack of timely reporting or documentation

Employers and insurance companies may argue that the injury is not job-related or that it resulted from non-occupational causes.

Get Help With a Cumulative Injury Claim

If you are dealing with pain or medical issues that you believe are related to your work over time, you may have a valid cumulative injury claim. These cases can be more complex than specific injury claims and often require strong medical evidence.

The Law Offices of Norman J. Homen can help you understand your rights and take the steps necessary to protect your claim. Contact us today for a free consultation.