I was cancelled for four hours (7pm-11pm). Later I was callled that I am needed at 11 pm. So I arrived. One nurse was sent home and I will take over her assignment. Everyone thought it does not make any sense, but the supervisor said that "Labor laws states that you cannot be cancelled twice in a shift" . Any one here knows about the labor laws in Virginia? I think there is misinterpretation of the law. Is it twice in a shift or twice a shift?