Having worked 5 years in Korea I'd say the worst offenders don't let people work from home anyway. The main issue is that there's typically already a maximum overtime per week you can clock in. But this doesn't stop anyone to work beyond the limit and not claim those hours.
Edit: HN is funny sometimes, I'm downvoted for stating simple facts. At least you could elaborate on how I somehow offended you.
Edit: HN is funny sometimes, I'm downvoted for stating simple facts. At least you could elaborate on how I somehow offended you.