>I have zero reservations about South Korea's workers' rights protections, workplace health and safety, and environmental regulations.
Well, Samsung only just apologised last year to workers for some unusually high rates of cancer among workers at its (local) semiconductor and display factories[1]. It took ten years or more to go through the Korean courts. In general, Korea's industrial death/injury rates are very high compared to Western countries.[2] Workplace health for workers in Korea's electronics industry in general does not appear great, to say the least.[3] Finally, Samsung's treatment of workers in its Vietnam factories is, by most accounts, subpar at best.[4]
I live in Korea and I've been here for about four years. (Note that if we were to cover something outside tech/electronics, like construction, the workplace health and safety situation in Korea would appear even more dismal). I think I've dumped enough links already, but without adding more I will agree that legal protections for workers are quite strong in Korea at the base level, but they are often blatantly disregarded or skirted around by employers.
[1] https://www.aljazeera.com/news/2018/11/samsung-electronics-a...
[2]https://www.ft.com/content/57c76820-d3f0-11e7-8c9a-d9c0a5c8d...
[3]https://www.ncbi.nlm.nih.gov/pubmed/25938673
[4]https://ipen.org/news/samsung-workers-line%c2%a0unique-repor...