My husband s EF is 15 percent. He was diagnosed with congestive heart failure on February 4, 2014 and has been out from work since that day. He recei ed a cardiac defibrillator implant on June 17, 2014 because the EF had not improved. It remained at 15 percent.He is a building supply delivery truck driver with CDL. He has been told that he can no longer drive the truck requiring the CDL.However, he also worked on yard assisting customers to fill orders of variuos building materials and made local deliveries drivng a regular pickup truck.He very much wants to return to work just on the yard and assisting customers. His doctor recommends additional three months of medication therapy and monitoring.They have so recommended that he file for disability.What are his chances of working with EF of this percentage? I am afraid tbe the physical exertion wlll definately increase his chance of a heart attack and/,or death.