About 9 or 10 years ago I came across a document that listed the earnings of San Fransisco employees, city and county. The highest paid was a nurse at a county hospital, with a not too shabby total of $345K. There was an endless list of cops and firefighters pulling in $220K. I dont remember the exact numbers, but I believe that at least 30 or 40% of all city employees were at the six figure mark.
Overtime is granted to the senior employees first and they are the highest paid.