The crossword solution for the term 'WORK ON A SUB?' is 'EAT'. This is a reference to the job of a sandwich artist, which is a person who works in a sandwich shop and prepares sandwiches for customers. The job involves assembling ingredients, such as meats, cheeses, and vegetables, onto bread or rolls to create a sandwich. Sandwich artists must also be able to follow instructions and recipes, as well as maintain a clean work environment.