Usually, diarrhea is caused by a virus that infects the gut. Some people call it intestinal flu or stomach flu.. It can also happen due to: 1  Alcohol abuse. 2  Allergies to certain foods. 3  Diabetes. 4  Diseases of the intestines (such as Crohn's disease or ulcerative colitis). 5  Eating foods that upset the digestive system.
You are allowed to continue working and still receive Social Security benefits. However, if you are under full retirement age, you are limited in the amount you can earn. In 2011, that amount is $14,160. If you are under full retirement age, then you will have to repay $1 for every $2 year earn over that limit.
Social Security does not set a minimum retirement benefit, whether or not you continue working after you retire and apply for benefits. To qualify for Social Security retirement, you must work and earn at least 40 work credits, by paying in to the Social Security system through payroll taxes. You can earn a maximum of 4 credits every year.