Just updated our research regarding China Representative Office rules relating to employees and note the following.

Q.  How many foreigners can work for the Rep Office? What is the proper term for referring to these employees?

A.  A Rep Office may hire no more than four foreign persons, each of whom is called a representative.

Just received an email from a friend stating/asking the following (note that I have changed some elements of the email to strip it of any even potentially identifying information):

I am heading off again to work for a few years at our China Rep Office.  My new employment contract with the head office says that