A) According to Social Security administration – If you work while receiving disability payments You should tell us if you take a job or become self-employed, no matter how little you earn. Please let us know how many hours you expect to work, and when your work starts or stops. If you still have a qualifying disability, you’ll be eligible for a trial work period, and you can continue receiving benefits for up to nine months. Also, tell us if you have any special work expenses because of your disability (such as specialized equipment, a wheelchair or even prescription drugs), or if there’s any change in the amount of those expenses.
Source – https://www.ssa.gov/pubs/EN-05-10153.pdf