Most CNAs start their profession by taking a training program that lasts only a few months and is often administered by the hospital where they are going to later be employed. After completing his radiology training he worked at Auckland Hospital as a part of the interventional team working with the NZ Liver Transplant Unit before completing a stint at Nelson Hospital. In any case, due to his or her ample experience, a retired physician would need no training -- or, so it would seem. Because many retired physicians aren't desperate to return to the same schedules, calls for and restrictions of their previous job, another common possibility is to become a locum tenens physician. Retired physicians are often very familiar with all of the weather that make a health care facility run smoothly, which is why some look into health care administration. With retirement not turning out the best way they hoped, some physicians who had way back hung up their stethoscope at the moment are returning to the workforce.