Does comp cover carpal tunnel when you have it before switched to a job at work that involves lot of computer work?

It depends on the specific circumstances of the case and the laws of the jurisdiction where the claim is filed. In general, workers' compensation benefits are available for injuries or illnesses that arise out of and in the course of employment. However, there may be exceptions or limitations for pre-existing conditions.

To establish a workers' compensation claim for carpal tunnel syndrome, the injured worker must show that:

- The carpal tunnel syndrome was caused or aggravated by the job.

- The job duties involved repetitive or forceful hand or wrist movements that put the worker at risk for carpal tunnel syndrome.

In cases involving pre-existing carpal tunnel syndrome, the worker may still be eligible for benefits if they can show that the work activities significantly aggravated or accelerated their condition. However, the employer or workers' compensation insurer may argue that the pre-existing condition was the primary cause of the worker's symptoms and that the work-related activities did not contribute significantly to the condition.

The determination of whether workers' compensation benefits are available for pre-existing carpal tunnel syndrome is often a complex and fact-specific issue. It is important to consult with an experienced workers' compensation attorney to determine the specific requirements and limitations that apply in your jurisdiction.