Working in a warehouse always comes with some risks, but they can be extra dangerous during the holiday rush. The busy shopping season means more goods are flying off shelves. It's possible that you may have suffered an injury and worked through it. Likewise, just because the holidays have passed, it does not mean there aren't risks on the job. In fact, injuries and fatalities among warehouse workers are higher than average.
Given the perfect storm of circumstances, any vehicle of any size can roll over. However, the taller, narrower vehicles are most at risk since their center of gravity is higher.