Nobody looks forward to working extra hours at a job that is already tiring. What they look forward to is the chance for a brief respite from the constant stress of poverty, even if it comes at great cost to everything else in their lives.

Source: worked as a welder in a shipyard after the first dotcom crash. Took all the overtime I could get, because bills don't pay themselves. I enjoyed the work in a general sense, and my coworkers, but a human body can only push itself so hard before there are long-term consequences, and that is something that most hourly workers have to deal with over their entire careers.

tl;dr- "Looking forward" to overtime is like saying that someone who is drowning is "looking forward" to breathing.