Thanks for the replies! I wasn't really sure, because I figure if a chain hires a bunch of part-time workers, they wouldn't have to provide as many full-time benefits. I think 30 hours/week would be ideal, as it is enough hours to make a decent amount of money without getting burned out. Do any chains consider 30 hours/week full-time? I wonder if it would make a difference if your friend wanted to work part-time generally (as opposed to just weekends).