Costs of health care consumption and sick leave 2006 in Sweden for Whiplash Associated Disorders (WAD) was estimated to be 4 billion Swedish crowns. Despite tremendous costs and personal sufferings there are only a few prospective randomized studies (RCT) in patients with chronic WAD, and none of them evaluating return to work, or the role of neck specific exercises with or without a combination of a behavioral approach compared with prescribed physical activity.