My friend and I had plans to drive up to my apartment today from her hometown to go black friday shopping at the big mall by my apartment. She worked from 2-11pm today and we were going to leave right at 11. However, the night time aid at the old folks home she works at called off and her boss is telling her she now has to work a second shift from midnight to 6am. Is it illegal to force her to stay to work the overnight shift without giving a prior notice that she would have to do this?