I disagree; the laws are lax because oligarchies in developing countries typically don't get harmed by dangerous working conditions. The people with the power to enforce safe workplace laws have no external incentive; it is at odds with maximizing their cut of the revenue.
> ...laws are lax because oligarchies in developing countries typically don't get harmed by dangerous working conditions.
This holds true even for developed nations. If a particular company or industry can skirt workers rights, environmental laws, etc. and bear the impact as merely a negative return, they will.
> The people with the power to enforce safe workplace laws have no external incentive...
Right, and the only force which affects such oligarchies is unionization. However, as gozur88 said above, feeding your family is more important than any potential health impacts. And when you're in a situation where thousands of others will gladly assume your position, regardless of the cost, there is no feasibly to unionized striking.
Unionization fails when an oligarchy can reliably imprison union leaders. Looking at the track record of developing countries, this is the typical path, not a lack of interest by local workers.
The problem is environmental regulations raise the cost of doing business. Which is fine, if you live in a place like the US, say, or Australia. But if you live in a country where people are already going hungry, a small increase in costs means people on the margins are going to literally starve to death.