What about the government's health care system for foreign employees?

You must live in small enclave in the jungle not to have Prudential advertising burning your eyes.

Ask them for a 'rider' extension on your Thai coverage - shouldn't cost too much more.

The only medical services provided free and without insurance are EMERGENCIES - but they have a chat later! FV Hospital in HCM has a strict cash/insurance policy, up front, even if you are dripping blood on their over-rated premises.

Many hospitals are called clinics but still do simpler operations.

You will have to pay the street price, often a multiple of that, a VN citizen must pay.A very few places apply a one-price policy.
There only very limited options to get an insurance. there are plenty of topics related to here in the board. No insurance, rip-off costs apply.

Yes, Prudential is very popular here, too.
But, as far as I know, health insurance is not usually included in the contract, Visa renewal isn't, either, just because these get very complicated sometimes, and the employers don't want to make themseslf busier because of something they don't care or don't want to care about. Sorry to say that, but it's the way things go here.