Not much different from the 12-year-old teenager, you also have restrictions on finding work because you are under the age of 14. Federal law in the United States limit the types of jobs for teens under 14 years old. You can only work as delivering newspapers, babysitting, cleaning up leaves in the garden of your neighbor or work as an actor, model.
If your family has own business you can work in it as long as the work is not included in the list of occupations considered hazardous by the government – Source: Youth Rules – What do I need to know about workplace hazards?. But in fact there are companies that hire teenagers aged 13, such as fashion company and grocery store.