I work part time at a grocery store deli, but recently increased my hours at my primary place of employment, and now I need to quit at the deli. I've never left a job on short notice before, so I'm not exactly sure how this works. Do I only have to finish working the current week's schedule, or do I have to give them two weeks notice? Do I tell my employer at the beginning or end of my next shift? I want out as soon as possible so I'm not working too many combined hours.