@Setanta,
												I see, thanks. So this practice is applicapable to "high income bracket people" in the US. But workers are usually laid off.  Do I understand it correctly? 
But in China, this word "buyout" is applied to workers, that is, they are not technically laid off, but they are "bought out," with a little sum of money, and they should never come back again for any benefits.  But maybe we should not use "buyout" for the Chinese context."  I hope you understand what I am talking about.