Working during the industrial revolution is hazardous, especially when you're 9 years old. 14 hours a day 6 days a week, that's how long those people worked around those machines. And if your hand got stuck in one it could cost u a limb, or 2. Workers in the factories developed medical problems, too. The pollution and dust that were constantly in the air led to the illness known as mill fever. It was a dreaded disease, and it took many lives. That's why working during the industrial revolution is hazardous.