Those that have gone to an accredited school with the intent of learning about administration and such skills learn tons and tons of what to do and what not to do. Not that this should be felt as a statement that takes away from those that haven’t gone to school. There’s so much stuff that a person will have to learn on the job that it can get a little bewildering.
However, one thing that most people can agree on as common sense is subtly threatening your employees with their jobs to vote a certain way is a bad thing and should not be done. This is not information that you acquire in school. This is not information that you can only learn on the job. This is information that you essentially already know since doing so is potentially illegal.