Whew!  I just got back from my first day at the factory!  That is hard work!
That does sound like a hard job.. but at least you can't take interest in the face that you're doing something that's been done for years, since the industrial revolution!
Has it always been this hard?  My back is killing me!
Well... children used to have to work in factories, so I suppose it could be worse! More dangerous, too. Less safety codes. Earlier factories had small amounts of machinery, one or two spinning "mules," and were smaller and called glorified workshops.
Wow!  Well the factory I'm working at has a ton of really huge machinery!  I hope I don't lose an arm or anything, they look dangerous!
It's possible they are dangerous. Most modern factories have large warehouses or warehouse-like facilities, and they usually have heavy equipment for assembly line production. So, you have to make sure you keep track of safety codes and be aware of surroundings.