I have suggested that the qualified employee also play the role of the dog eating the other dog (the employer) to get out as much as he can in terms of salary.
I am sure you won't do that yourself; otherwise.....

Just like you, Turnoi, I've got a considerable quantity of shekels coming in month by month, in my case from pensions and investments. So, trying to get as much as I can out of an employer is unnecessary in my case, as it is in yours. I'm teaching to do sth mentally rewarding and keep myself semi-ocupied in what is basically a parttime job paid fulltime.That is how many teaching jobs at public schools in China can be described.
Hwever, Adrian is a different kettle of fish from you and me. Good for him! In the west, oldtimers like him would obtain inferior work incommensurate with his talents working for mediocre wages! That's why he's better in EFL in Asia if he's after the big bucks, which he he obviously realises.