You are entitled to workers’ compensation benefits when a preexisting injury is aggravated from a new injury at work. For example, you hurt your back years ago and it got better, but now you hurt it again at work. It doesn’t matter that you hurt your back previously because it’s a new injury that’s aggravated at work. What can be complicated is whether the insurance company treats your injury as an aggravation or a reoccurrence. Jim Monaghan explains why this distinction matters, and how insurance companies will try to disallow a workers’ comp claim based on a preexisting condition.