Sounds about right, but I can't properly speak to US/EU ones, and definitely can't speak properly about worker rights in those other Asian/SE Asian countries. I think we'd probably all agree that EU ones are some of the best. I would guess that generally Korean worker rights are better than the ones in those Asian countries. (The growing foreign labour force in Korea, mostly for manual labour and factories, and mostly from SE Asia and China, might disagree, as they often fall into the same migrant labour trap that exists in other developed countries.)
Some things that I think are good about Korean labour law/rights:
-No at-will employment: employers must have a solid reason for firing somebody (misconduct, financial loss, crippling lack of company funds). In practice, this is often skirted through social pressure, i.e. employees encouraged openly to quit, or having their working lives turned into quiet hells until they quit to get away. If a person is fired they must be given either 30 days' notice or 30 days' salary.
-"Pension"/severance pay: all full-time workers accumulate a month's salary for each year worked at a company. Legally this must be paid out within 14 days after leaving a position. My own (Western) country has nothing like this, and I think it's especially good for the Korean context where a person might work for LG, Samsung, or Hyundai for twenty years, then be eased out right when their kids are starting university. Often, they can't find other whitecollar jobs. Every second or third cabbie I talk to in Seoul used to work for one of the big Korean firms. So the severance gives people a bit of a buffer if they randomly get fired or have to quit.
-Strong state-funded healthcare and social safety net.
Two less-good things:
-Koreans famously work some of the longest hours in the OECD, and it's usually overtime that people find it impossible, culturally, to say no to. The government legislated against it this year (all work beyond 8 hours per day and 40 hours per week to be defined as overtime, with time and a half paid for overtime and a maximum of 12 extra hours per week allowed) so hopefully things are going to slowly change there. In practice, people still seem to be working tons of overtime (for which they should be paid extra) without reporting it, but the law is still new.
-Minimum number of leave days per year is around 11-12 for the first year of employment and could be higher. In practice, corporate culture often limits peoples' freedoms around when they can take leave. Lack of separate sick days is common: people have to either use a leave day, or work sick.