I work in the bulk department and everyday management is yelling at us when we shut the belt off. We only shut it off because it's unsafe for us to continue working. Depending on the day there are mountains of packages between the belt and the carts. We can't even get to the belt to continue pulling packages off. The walkway is filled with boxes and we can't walk. There's been a few times that we have gotten minor injuries from boxes falling on us or tripping over them. It's bulk so everything is heavy and it can cause serous injuries to us when it falls. Does the union give us any rights for us to refuse to work under these conditions until they allow us to stop the belt when unsafe? If there is a fire, severe weather etc we can't get out because all of the packages block the aisles. But yet management yells at us to start up the belt.