Employee was assisting in repairs to 2 1/2"" overhead piping with a 24"" pipe wrench. Employee reported soreness in left shoulder and neck after reaching for a short length of pipe, that was being used for leverage on the pipe wrench, when the short length of pipe slipped off the wrench handle. The accident occurred on 9/12/2017 and the employee was seen by the doctor on 9/25/17.