Career No-nos.

[Bad Zebra]

I'd add another one that I've observed more frequently in the past 5 years:

Engage in inappropriate behavior outside the lines.

Pretty broad I know but I've seen the following:
Officials charged with DUI's
Officials arrested for marijuana posession
Officials charged with domestic violence
Officials banned from school grounds for various reasons
Officials arrested for assault
Officials charged with indecent exposure

I used to believe sports officials were some of the highest character people around. Maybe it's because I'm in Florida and this place attracts whackos, but it seems like I see these occur more often than would be expected. In every instance noted above, the offending official ended up losing out on their schedule or being asked to leave the association, whether or not they were found guilty or charges dismissed.