Colorado legislators are considering whether to make it harder for workers comp insurers to use video surveillance to ferret out suspicious injury claims. Legislators on an interim committee are looking into the state’s largest comp insurer, contending Pinnacol Assurance’s anti-fraud video surveillance was excessive. Pinnacol says its surveillance is legal and often is the key evidence in landing convictions for fake injury claims. One proposal that may come before the 2010 legislature would require insurers to show “probable cause†before being allowed to use video surveillance.