Actually most western European countries have 'expat programs' for eastern European countries with job offerings mostly as babysitters/valets/waiters.
They're intended for young people & the stay is between 6 months & 2 years.
In that context 'expats' is used for temporal residence in foreign countries with no intentions to be made permanent. It's mostly intended for young people to travel around, not much for the financial benefit.
So in my understanding it's the intentions which define, not skin color / continents.
PS. The written above is a definition from my personal point of view :)
And you base that on....? Why do people search for injustice?