Normally, a school will outline a position and the conditions of employment. That outline includes name and location of the school, minimum qualification for the teacher (BA, MA), subjects to be taught, numbers of classroom contact hours, monthly salary, any additional benefits, accommodation, medical care particulars, allowable holidays, and other information pertinent to the specific school.
Number of contact hours varies with 16- 20 being the norm. Some institutions require more and salary is normally adjusted to accommodate the extra teaching hours. If asked to teach beyond the contracted number of hours, the teacher is paid at a stated rate per hour, as stipulated by the institution. Numbers of teaching hours are stated in the contract.
Regulations state that foreign teachers can reside in China for only 5 years on teaching contracts before needing to leave China for at least 2 years before returning to teach.
(State Administration of Foreign Experts Affair October 18, 2006)