I worked in this huge sea food freezer-warehouse. It was -20 celsius (-4 fahrenheit) at all times and all I had to do was stand at the production line doing some repetitive task, so my body would freeze up no matter what I wore even if I'm from generally cold climate country. They advertised it as "7-12 hours a day depending on how quickly we hit our daily targets" but we worked for 13+ hours every day even when everyone was busting their ass off. Oh and all that for minimum wage. Needless to say I only worked there for like few weeks before quitting.