I was "promoted today." In our center a preloader has to load two trucks and fill surepost bags at the same time. it is a bitch trust me. I was told today that this was my new spot. They asked another preloader if he would do it and he refused. Do I have this option? I have more seniority then the preloader they asked and they didn't ask me they told me it was my new spot. Im in the union do I file a grievance or do I just have to make the best of it?