One of the projects I was helping to design was a "science city" tech campus. The workers lived in an encampment next to the construction site. They worked from dawn until dusk for 6.5 days per week -- half a day off on Sunday -- every day of the month except for the new moon. Children as young as 6 were working -- moving and sorting materials, but quite dangerous inasmuch as it was on a live construction site. The standard wage was roughly $3 per MONTH (although food and very nominal shelter -- really more like "camping space" -- were provided for free). These were not outrageously abusive labour practices -- they were absolutely bog-standard practice of local industry, preferable to many of the alternatives for these people.
Seeing this situation with my own eyes, I realised that if these people had the option to work in one of those $1/day sweatshops I'd heard anti-globalisation activists go on about -- in line with my own sympathies -- it would be an absolute DREAM. Since then, I've been rabidly pro-globalisation. These days, I get incensed when I see people going on about the horrors of globalisation, with absolutely ZERO understanding of the counter-factual. Utter ignorance of how bad it would be otherwise.
The one case where I'll allow that sweatshops are problematic is when their owners become so powerful that they corrupt the local politics and take steps to ensure that that the population cannot develop its economy any further. This has happened in some places, creating locked-in populations for whom the sweatshop is not the bottom rung of the ladder, but the top. That's an actual problem, where it has happened -- but in most of the world (eg. India, China, most of the rest of East Asia), that's NOT the story that's played out, and sweatshops have been a vital (but temporary) step in economic development.