I just looked at my paycheck this morning and I was not paid for 4.5 hours of time that I worked on the night shift last week. I have a feeling that they have done this to me before, but I have not been vigilant about keeping track of my hours. What are the steps that I should take from here? Am I eligible for some kind of penalty pay if I file a grievance? I know, first step is to start writing down my times.