Carrying workers’ comp insurance usually doesn’t make it impossible for employees to sue over worker-related illnesses or injuries, but it greatly deters them from filing such lawsuits. At the time that employees file a workers’ comp claim, they usually waive their right to sue over the incident. Thus, employees normally can’t both file a claim and sue their employer. While employees can theoretically sue employers over work-related illnesses and injuries, the vast majority of employees who become ill or injured on the job choose to file a workers’ comp claim instead. They usually do this because filing a claim is fast and promises fair compensation, and lawsuits can be uncertain ventures.