What kind of work did Sal's father do?

Sal Di Stefano's father had to start working at the young age of nine due to his family's financial difficulties. His early job was crucial in helping support his family, as they could not afford to keep him in school 1 2. As an adult, his father's work involved manual labor, which unfortunately led to severe arthritis in his back by his early 50s, forcing him into early retirement and causing him a period of depression due to the loss of purpose 2.