Employee had an accident on 5/20/15 he was taken to hospital and released back to work, he continued to have pain, he went back to the ER on 7-6-15 and had more testing he was told to remain away from work until seen by specialist which he did on 8-4-15. We was unaware of him missing work due to the injury on 5-20-15 until he brought us his off work slip.