Eligibility for Social Security benefits depends upon two things - a medical condition that lasts more than 12 months and an inability to complete work. Understanding what is meant by an inability to work is very important because if the person reviewing the application determines that the applicant is able to engage in substantial gainful activity, he or she will be denied SSD benefits.
The first thing to look at when determining if someone is engaged in substantial gainful activity is his or her income. In 2017, if a San Diego non-blind resident is earning above $1170 or a statutorily blind person is earning more than $1950, they are considered to be gainfully employed. Federal regulations stipulate the amount and often change year by year.