I have been just notified by my employer that I have been hit with a wage garnishment for an identity theft case that happened 3yrs ago. The company I work for is based in California, however since then I have moved to our office in China (same company) and no longer working under my SSN# and now considered as an international employee.

Since I am working as an international employee status working under my China citizenship, is it even possible for my employer to garnish my wages?

If you work for that company, and they have offices in the US it is possible,

But they can not garnish your wages for losses of a ID theft, when you had a court hearing did you not go and protect yourself

If you work for that company, and they have offices in the US it is possible,

But they can not garnish your wages for losses of a ID theft, when you had a court hearing did you not go and protect yourself

Regarding the court hearing, it took place without me knowing so I automatically lost the hearing based on technicality I guess. I do not plan on ever going back to the US at this point and have already re-located to China.

At this point I am just not sure if my company is able to garnish my wages even though I am not longer considered a local employee but a international(foreign)employee.

I would say yes they will be able to garnish your wages, since the local office will be served. The issue is that is the amount less than the cost to go back to court and fix it.
If it is, then you may wish to merely pay it and be done.

If not, you file in court for improper service, ( you were never served) and you present the court the evidence that you did not owe the money and get the case over turned.

I would assume you have since filed a ID theft report with the police, have put a freeze on all three of your credit reporting bureaus to keep it from happening again