Saw a guy in Fiji using the tip of a chainsaw to cut a notch in a beam. He was wearing flip-flops, and had no hearing protection, not to mention cutting things with the tip of a chainsaw is a bad idea, even with proper protective equipment.

Even in more developed countries, there are still plenty of very dangerous industries, such as logging. Farmers are notorious for poor H&S as well, it's a struggle here in New Zealand to get them to wear helmets while on bikes and put rollbars on quads. I've seen plenty of dodgy shit go down on building sites as well, despite attempts by Worksafe to wrap everything in cotton wool.