On 8/25/11 employee reported back pain. He said he had back pain over the years but it worsened on 6/21/11 when team-lifting a 80 lb pump cover. On 8/25/12 diagnostic test revealed a back strain and preventative treatment was performed. On 1/17/12 additional diagnostic test revealed degenerative disc disease and fusion surgery was performed on 3/12/12 (first day off)