Oh yeah. Last June 3 I was told I had to leave my university job, because the province had changed the maximum age from 65 to 60, and I was 61. My res permit expired June 30, so I had just barely enough time to close out the term, move my stuff out of my flat, find a new job, etc., etc. I got a new job, but fulfilling the new visa requirements meant I had to apply for a brand-new Z visa back home. And the paperwork has multiplied four-fold, because each document has to be verified (apostille'd) by local, state and federal offices before it goes to the Chinese embassy/consulate. Took three months.

Woe unto anyone here working under a tourist or a business visa. They find you, you get deported, fined a lot of money and banned from entering the country for 10 years. And, they're checking all of us to make sure we're not working any other extra jobs, or it's deport, fine, ban again.