If you're looking for English teaching jobs in China, and are tired of your small, unreliable school, you might consider submitting your resume to one of the major training centers around China.
Although a great many expats worry that submitting to a contract with a major corporation would mean the end of freedom and fun, they do have a great deal to offer to experienced teachers looking for reliable, well-paid work. Multinational schools also offer something more casual schools do not: a next step after teaching in China.
(Promulgated jointly by the Ministry of Labor, Ministry of Public Security, Ministry of Foreign Affairs and the Ministry of Foreign Trade and Economic Cooperation of the People's Republic of China on 22 January, 1996)
In most cases, embassies are powerless to help the teacher in trouble other than notify family and act as consultant. Breaking Chinese regulations can be as small as not having your Residency Permit in a timely manner (fine is involved) to being involved in a traffic accident where the blame is put on the foreigner (large fines, possible incarceration, probably deportation depending on the circumstances). The foreign teachers should realize that any infraction in their own country is probably an infraction in China.
Foreigners should not participate in any political gatherings and should be aware that underground churches are monitored. Participation can be perceived as breaking the law and arrest can follow. Proselytizing is also not allowed, in or out of the classroom.
If a teacher of Chinese background enters China using only an ID card, they are treated as a Chinese citizen in cases of breaking the law. The embassies have no jurisdiction over that person, even if a citizen of another nation.
If there are questions concerning specific regulations, these should be discussed with the school/institution foreign affairs officer.