Pros
1. LG Culture - if you work there long enough you adopt a culture that is hard to let go of, I am sure this is the case with several MNCs. 2. Korean way of working - From what I have experienced, there would be very little or no politics among the colleagues as all your managers are going to be Koreans, and they don't trust any of their sub-ordinates. 3. Getting to know what's happening with other departments - At each subsidiary's HQ, you often meet and make friends from different department members and get exposed to their business models and practices. I think this is probably due to the way office is laid out, unlike in other companies where different departments are separated from each other.
Cons
1. Forgot work-life balance - even if you are back home on time, they will somehow make sure your mind is at work almost all the time as its impossible to satisfy your manager or the company's demand 2. You could only grow so much - irrespective of how long you stay in the company, you can never truly become a manager, as there will be a Korean PM above you, commanding you what to do and what not to do.