What does Burris’s dad do to make money in Harper Lee's To Kill a Mockingbird?

In the third chapter of Harper Lee's To Kill a Mockingbird, Scout is very upset about her miserable first day of school. After explaining to her father what happened, she begs him to allow her to never go to school again. When he replies that she must go to school because it is the law, she attempts to argue her position by referencing the boy in her class named Burris Ewell. It is through Atticus's description of the Ewells in response to Scout's argument that we learn exactly what Burris's father, Bob Ewell, does for a living.

Scout argues that she does not have to go to school because folks like Burris Ewell only go to school for one day of the year then leave. Scout explains that Burris only goes to school one day out of the year because the "truant lady reckons she's carried out the law when she gets his name on the roll"; therefore, Scout argues she could do the same. But Atticus explains that the laws are bent for the Ewells, who choose to live more like animals; therefore, it's ridiculous to try and force the Ewells into school when they clearly have no wish to improve themselves. Scout narrates the following description of the Ewells given by her father:

[T]he Ewells had been the disgrace of Maycomb for three generations. None of them had done an honest day's work in his recollection. (Ch. 3)

Based on this description, we can easily see exactly what Bob Ewell does to make money--absolutely nothing.

In this same chapter, we also learn from Atticus that the Ewells' only source of income comes from relief checks that Ewell spends mostly on "green whiskey."

Much later, after the trial, Scout informs the reader that Bob Ewell was given a job through President Roosevelt's Works Progress Administration (WPA) but lost it "in a matter of days" (Ch. 27). She further states that "he was the only man [she] ever heard of who was fired from the WPA for laziness" (Ch. 27). Through this description, we again know that, throughout the book, Ewell does absolutely nothing to make money other than collect his relief checks.