You may want to do an interview yourself if necessary to demonstrate a professional approach. Personnel policies, any local company flyers, etc. Even copies of current classified ads might be useful . For example, being on time all the time is certainly one of the qualities you will generate in your brainstorming and put on your checklist, but there is little value in students merely saying they will improve. Only time can reveal true changes.
Some possible qualities based on employer input are as follows.
Reports to work on time and works. Infrequent absences all for good reason. Never leaves early. Honest, sincere, does work assigned and more. Thinks for himself and takes action with understanding of implication.