I work feeder unload. But have an extra position in which I leave half way through the night to walk-off feeder trailers. My supervisor just informed me that my area is short staffed and they are filling my walkoff position in with an alternate and keeping me in my area. I told him they couldnt do this because it conflicts with seniority rules. CAN THEY DO THIS?
"It depends" on your local and area rules.
In my building, you can be pulled from a preferred job ahead of a junior member if they're short staffed at a skilled position. For example, a 10 year person that can sort on the sort aisle can be pulled ahead of a 5 year person that isn't sort qualified from the irreg line on a temporary basis for coverage as they must be "qualified to perform the work" when "temporarily reducing the staffing" of an area under our supplement
If it's being done permanently, then you need to grieve it as the company has a responsibility to fill those jobs via hiring.. especially if it's costing you an opportunity to work additional hours.