Question

My sister is a general manager for a fast food restaurant. This morning she was told by her employer that he needed a manager not a custodial worker. He then told her she needed to take a week off and they would make a decision then. We discussed this and told her she needed him to state whether she was layed off or fired. When she called back for the answer, he explained she was suspended for a week and at the end of the suspension they will have a decision on what they will do with her job. We asked that she get a formal documentation from her employer stating the reason and the terms of her suspension. She has not been written up prior to this incident and has not been told that her job has not been adequate. Her sales are up from previous years and her labor is down. She has worked for the company about two years. Question: Is this legal? She can not file for unemployment and is currently making no income to help support her family. What are her rights/options?