Persons who are abused often have serious problems in a complicated life situation. We studied this issue and considered ways in which medical social workers (MSWs) handle these social problems. We collected data in 16 cases of elderly abuse that were managed by staff at our hospital from 2010 to 2013 and compared the characteristics in these cases with those of 23 cases of child abuse during the same period. Data analysis revealed 3 characteristics of abused persons: insufficient use of long-term care insurance service; mental disorder such as dementia or mental illness; and financial problems. Further detailed analysis found that intervention for elderly abuse cases was requested only in more difficult cases when abuse was easily identified by our staff. Therefore, staff’s awareness and motivation to become more involved in cases of elderly abuse may be low compared with cases of child abuse. Hospital staff are in a position where they should be able to readily identify maltreatment of aged persons. We need to develop a mechanism for the early detection of elderly abuse so staff can intervene easily in mild cases of elderly abuse, and ask for assistance from MSWs in more difficult cases. It is important to ensure that all employees have access to MSWs in the hospital.